8972644 has 6 divisors (see below), whose sum is σ = 15702134. Its totient is φ = 4486320.

The previous prime is 8972627. The next prime is 8972647. The reversal of 8972644 is 4462798.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 1790244 = 2680^2 + 1338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8972597 and 8972606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8972647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121577 + ... + 1121584.

Almost surely, 2^8972644 is an apocalyptic number.

It is an amenable number.

8972644 is a deficient number, since it is larger than the sum of its proper divisors (6729490).

8972644 is a wasteful number, since it uses less digits than its factorization.

8972644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243165 (or 2243163 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 8972644 is about 2995.4371968045. The cubic root of 8972644 is about 207.7974174027.

The spelling of 8972644 in words is "eight million, nine hundred seventy-two thousand, six hundred forty-four".