10639680 has 56 divisors (see below), whose sum is σ = 33784032. Its totient is φ = 2836992.

The previous prime is 10639669. The next prime is 10639691. The reversal of 10639680 is 8693601.

It is an interprime number because it is at equal distance from previous prime (10639669) and next prime (10639691).

It is a super-2 number, since 2×10639680² = 226405581004800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4582 + ... + 6501.

Almost surely, 2^10639680 is an apocalyptic number.

10639680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10639680 is an abundant number, since it is smaller than the sum of its proper divisors (23144352).

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

10639680 is a wasteful number, since it uses less digits than its factorization.

10639680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11103 (or 11093 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 10639680 is about 3261.8522345440. The cubic root of 10639680 is about 219.9426847938.

The spelling of 10639680 in words is "ten million, six hundred thirty-nine thousand, six hundred eighty".