10645691 has 16 divisors (see below), whose sum is σ = 12734400. Its totient is φ = 8890560.

The previous prime is 10645673. The next prime is 10645709. The reversal of 10645691 is 19654601.

10645691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10645673) and next prime (10645709).

It is not a de Polignac number, because 10645691 - 2²² = 6451387 is a prime.

It is a super-2 number, since 2×10645691² = 226661473734962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10645891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13685 + ... + 14441.

It is an arithmetic number, because the mean of its divisors is an integer number (795900).

Almost surely, 2^10645691 is an apocalyptic number.

10645691 is a deficient number, since it is larger than the sum of its proper divisors (2088709).

10645691 is an frugal number, since it uses more digits than its factorization.

10645691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 10645691 is about 3262.7735134391. The cubic root of 10645691 is about 219.9840966465.

The spelling of 10645691 in words is "ten million, six hundred forty-five thousand, six hundred ninety-one".