10686840 has 32 divisors (see below), whose sum is σ = 32060880. Its totient is φ = 2849792.

The previous prime is 10686817. The next prime is 10686857. The reversal of 10686840 is 4868601.

It is a super-2 number, since 2×10686840² = 228417098371200, which contains 22 as substring.

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, 44409 + ... + 44648.

Almost surely, 2^10686840 is an apocalyptic number.

10686840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10686840 is an abundant number, since it is smaller than the sum of its proper divisors (21374040).

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

10686840 is a wasteful number, since it uses less digits than its factorization.

10686840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89071 (or 89067 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 10686840 is about 3269.0732631741. The cubic root of 10686840 is about 220.2671685315.

The spelling of 10686840 in words is "ten million, six hundred eighty-six thousand, eight hundred forty".