10620644 has 12 divisors (see below), whose sum is σ = 18751404. Its totient is φ = 5263104.

The previous prime is 10620619. The next prime is 10620647. The reversal of 10620644 is 44602601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3534400 + 7086244 = 1880^2 + 2662^2 .

It is a super-2 number, since 2×10620644² = 225596157949472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10620647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11297 + ... + 12200.

It is an arithmetic number, because the mean of its divisors is an integer number (1562617).

Almost surely, 2^10620644 is an apocalyptic number.

It is an amenable number.

10620644 is a deficient number, since it is larger than the sum of its proper divisors (8130760).

10620644 is a wasteful number, since it uses less digits than its factorization.

10620644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23614 (or 23612 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 10620644 is about 3258.9329542045. The cubic root of 10620644 is about 219.8114362228.

The spelling of 10620644 in words is "ten million, six hundred twenty thousand, six hundred forty-four".