7961564 has 12 divisors (see below), whose sum is σ = 15004584. Its totient is φ = 3674544.

The previous prime is 7961563. The next prime is 7961567. The reversal of 7961564 is 4651697.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7961561) 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, 76502 + ... + 76605.

It is an arithmetic number, because the mean of its divisors is an integer number (1250382).

Almost surely, 2^7961564 is an apocalyptic number.

It is an amenable number.

7961564 is a deficient number, since it is larger than the sum of its proper divisors (7043020).

7961564 is a wasteful number, since it uses less digits than its factorization.

7961564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153124 (or 153122 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 7961564 is about 2821.6243548708. The cubic root of 7961564 is about 199.6791856660.

The spelling of 7961564 in words is "seven million, nine hundred sixty-one thousand, five hundred sixty-four".