7520664 has 32 divisors (see below), whose sum is σ = 19908720. Its totient is φ = 2359296.

The previous prime is 7520663. The next prime is 7520677. The reversal of 7520664 is 4660257.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7520663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8809 + ... + 9624.

Almost surely, 2^7520664 is an apocalyptic number.

It is an amenable number.

7520664 is an abundant number, since it is smaller than the sum of its proper divisors (12388056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7520664 is a wasteful number, since it uses less digits than its factorization.

7520664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18459 (or 18455 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 7520664 is about 2742.3829054310. The cubic root of 7520664 is about 195.9229879313.

It can be divided in two parts, 75206 and 64, that multiplied together give a palindrome (4813184).

The spelling of 7520664 in words is "seven million, five hundred twenty thousand, six hundred sixty-four".