7664528 has 20 divisors (see below), whose sum is σ = 15095388. Its totient is φ = 3768960.

The previous prime is 7664519. The next prime is 7664537. The reversal of 7664528 is 8254667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7664519) and next prime (7664537).

It can be written as a sum of positive squares in 2 ways, for example, as 200704 + 7463824 = 448^2 + 2732^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7664491 and 7664500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2951 + ... + 4902.

Almost surely, 2^7664528 is an apocalyptic number.

It is an amenable number.

7664528 is a deficient number, since it is larger than the sum of its proper divisors (7430860).

7664528 is a wasteful number, since it uses less digits than its factorization.

7664528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922 (or 7916 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 7664528 is about 2768.4883962191. The cubic root of 7664528 is about 197.1643864826.

It can be divided in two parts, 7664 and 528, that added together give a 13-th power (8192 = 2¹³).

The spelling of 7664528 in words is "seven million, six hundred sixty-four thousand, five hundred twenty-eight".