10649680 has 20 divisors (see below), whose sum is σ = 24760692. Its totient is φ = 4259840.

The previous prime is 10649663. The next prime is 10649693. The reversal of 10649680 is 8694601.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 2742336 = 2812^2 + 1656^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×10649680² = 226831368204800, 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 3 ways as a sum of consecutive naturals, for example, 66481 + ... + 66640.

Almost surely, 2^10649680 is an apocalyptic number.

10649680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10649680 is an abundant number, since it is smaller than the sum of its proper divisors (14111012).

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

10649680 is a wasteful number, since it uses less digits than its factorization.

10649680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133134 (or 133128 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 10649680 is about 3263.3847459348. The cubic root of 10649680 is about 220.0115696395.

The spelling of 10649680 in words is "ten million, six hundred forty-nine thousand, six hundred eighty".