10643564 has 24 divisors (see below), whose sum is σ = 19848528. Its totient is φ = 4976640.

The previous prime is 10643561. The next prime is 10643593. The reversal of 10643564 is 46534601.

It is a happy number.

It is a super-2 number, since 2×10643564² = 226570909244192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10643561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12719 + ... + 13529.

It is an arithmetic number, because the mean of its divisors is an integer number (827022).

Almost surely, 2^10643564 is an apocalyptic number.

It is an amenable number.

10643564 is a deficient number, since it is larger than the sum of its proper divisors (9204964).

10643564 is a wasteful number, since it uses less digits than its factorization.

10643564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 10643564 is about 3262.4475474711. The cubic root of 10643564 is about 219.9694447923.

The spelling of 10643564 in words is "ten million, six hundred forty-three thousand, five hundred sixty-four".