109640864 has 12 divisors (see below), whose sum is σ = 215855514. Its totient is φ = 54820416.

The previous prime is 109640863. The next prime is 109640891. The reversal of 109640864 is 468046901.

It can be written as a sum of positive squares in only one way, i.e., 98803600 + 10837264 = 9940^2 + 3292^2 .

It is a super-2 number, since 2×109640864² = 24042238117332992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (109640863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1713107 + ... + 1713170.

Almost surely, 2^109640864 is an apocalyptic number.

It is an amenable number.

109640864 is a deficient number, since it is larger than the sum of its proper divisors (106214650).

109640864 is an equidigital number, since it uses as much as digits as its factorization.

109640864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3426287 (or 3426279 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 109640864 is about 10470.9533472363. The cubic root of 109640864 is about 478.6199713227.

The spelling of 109640864 in words is "one hundred nine million, six hundred forty thousand, eight hundred sixty-four".