8640970 has 24 divisors (see below), whose sum is σ = 16845516. Its totient is φ = 3189888.

The previous prime is 8640967. The next prime is 8640977. The reversal of 8640970 is 790468.

8640970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 3249 + 8637721 = 57^2 + 2939^2 .

It is not an unprimeable number, because it can be changed into a prime (8640977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 867 + ... + 4246.

Almost surely, 2^8640970 is an apocalyptic number.

8640970 is a deficient number, since it is larger than the sum of its proper divisors (8204546).

8640970 is a wasteful number, since it uses less digits than its factorization.

8640970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146 (or 5133 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 8640970 is about 2939.5526870597. The cubic root of 8640970 is about 205.2047923725.

The spelling of 8640970 in words is "eight million, six hundred forty thousand, nine hundred seventy".