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68825961 = 32192913879
BaseRepresentation
bin1000001101000…
…11001101101001
311210111201110200
410012203031221
5120104412321
610455102413
71464003531
oct406431551
9153451420
1068825961
1135939a66
121b071a09
131134a329
1491d84c1
156097d26
hex41a3369

68825961 has 24 divisors (see below), whose sum is σ = 108264000. Its totient is φ = 41967072.

The previous prime is 68825947. The next prime is 68825963. The reversal of 68825961 is 16952886.

It is not a de Polignac number, because 68825961 - 222 = 64631657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68825963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1981 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (4511000).

Almost surely, 268825961 is an apocalyptic number.

It is an amenable number.

68825961 is a deficient number, since it is larger than the sum of its proper divisors (39438039).

68825961 is a wasteful number, since it uses less digits than its factorization.

68825961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13933 (or 13930 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 68825961 is about 8296.1413319687. The cubic root of 68825961 is about 409.8114560413.

The spelling of 68825961 in words is "sixty-eight million, eight hundred twenty-five thousand, nine hundred sixty-one".

Divisors: 1 3 9 19 29 57 87 171 261 551 1653 4959 13879 41637 124911 263701 402491 791103 1207473 2373309 3622419 7647329 22941987 68825961