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68970 = 23511219
BaseRepresentation
bin10000110101101010
310111121110
4100311222
54201340
61251150
7405036
oct206552
9114543
1068970
1147900
1233ab6
1325515
141b1c6
1515680
hex10d6a

68970 has 48 divisors (see below), whose sum is σ = 191520. Its totient is φ = 15840.

The previous prime is 68963. The next prime is 68993. The reversal of 68970 is 7986.

68970 = T20 + T21 + ... + T74.

68970 = 162 + 172 + ... + 592.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

68970 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3621 + ... + 3639.

It is an arithmetic number, because the mean of its divisors is an integer number (3990).

268970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95760).

68970 is an abundant number, since it is smaller than the sum of its proper divisors (122550).

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

68970 is a wasteful number, since it uses less digits than its factorization.

68970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 68970 is about 262.6214004989. The cubic root of 68970 is about 41.0097141369.

The spelling of 68970 in words is "sixty-eight thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 11 15 19 22 30 33 38 55 57 66 95 110 114 121 165 190 209 242 285 330 363 418 570 605 627 726 1045 1210 1254 1815 2090 2299 3135 3630 4598 6270 6897 11495 13794 22990 34485 68970