108957681 has 12 divisors (see below), whose sum is σ = 179866752. Its totient is φ = 62261496.

The previous prime is 108957661. The next prime is 108957691. The reversal of 108957681 is 186759801.

It is not a de Polignac number, because 108957681 - 2¹⁴ = 108941297 is a prime.

It is a super-2 number, since 2×108957681² = 23743552497795522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108957661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 864681 + ... + 864806.

It is an arithmetic number, because the mean of its divisors is an integer number (14988896).

Almost surely, 2^108957681 is an apocalyptic number.

It is an amenable number.

108957681 is a deficient number, since it is larger than the sum of its proper divisors (70909071).

108957681 is a wasteful number, since it uses less digits than its factorization.

108957681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729500 (or 1729497 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 108957681 is about 10438.2795996275. The cubic root of 108957681 is about 477.6237899861.

The spelling of 108957681 in words is "one hundred eight million, nine hundred fifty-seven thousand, six hundred eighty-one".