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65882970 = 2345163499
BaseRepresentation
bin1111101101010…
…0101101011010
311120222012110000
43323110231122
5113331223340
610312033430
71426665426
oct373245532
9146865400
1065882970
113420993a
121a092876
131085990a
148a6db86
155bb5d30
hex3ed4b5a

65882970 has 80 divisors (see below), whose sum is σ = 178596000. Its totient is φ = 17426016.

The previous prime is 65882969. The next prime is 65882981. The reversal of 65882970 is 7928856.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 131781 + ... + 132279.

It is an arithmetic number, because the mean of its divisors is an integer number (2232450).

Almost surely, 265882970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65882970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89298000).

65882970 is an abundant number, since it is smaller than the sum of its proper divisors (112713030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65882970 is a wasteful number, since it uses less digits than its factorization.

65882970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 65882970 is about 8116.8325102838. The cubic root of 65882970 is about 403.8849989636.

The spelling of 65882970 in words is "sixty-five million, eight hundred eighty-two thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 163 270 326 405 489 499 810 815 978 998 1467 1497 1630 2445 2495 2934 2994 4401 4491 4890 4990 7335 7485 8802 8982 13203 13473 14670 14970 22005 22455 26406 26946 40419 44010 44910 66015 67365 80838 81337 132030 134730 162674 202095 244011 404190 406685 488022 732033 813370 1220055 1464066 2196099 2440110 3660165 4392198 6588297 7320330 10980495 13176594 21960990 32941485 65882970