10644564 has 72 divisors (see below), whose sum is σ = 29634528. Its totient is φ = 2963520.

The previous prime is 10644559. The next prime is 10644577. The reversal of 10644564 is 46544601.

It is a super-2 number, since 2×10644564² = 226613485500192, 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 23 ways as a sum of consecutive naturals, for example, 25074 + ... + 25494.

Almost surely, 2^10644564 is an apocalyptic number.

10644564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10644564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14817264).

10644564 is an abundant number, since it is smaller than the sum of its proper divisors (18989964).

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

10644564 is a wasteful number, since it uses less digits than its factorization.

10644564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 10644564 is about 3262.6008030404. The cubic root of 10644564 is about 219.9763335423.

The spelling of 10644564 in words is "ten million, six hundred forty-four thousand, five hundred sixty-four".