664130652 has 24 divisors (see below), whose sum is σ = 1550682000. Its totient is φ = 221227776.

The previous prime is 664130629. The next prime is 664130659. The reversal of 664130652 is 256031466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664130659) 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, 724 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (64611750).

Almost surely, 2^664130652 is an apocalyptic number.

It is an amenable number.

664130652 is an abundant number, since it is smaller than the sum of its proper divisors (886551348).

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

664130652 is a wasteful number, since it uses less digits than its factorization.

664130652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37285 (or 37283 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 664130652 is about 25770.7324692179. The cubic root of 664130652 is about 872.4713507450.

The spelling of 664130652 in words is "six hundred sixty-four million, one hundred thirty thousand, six hundred fifty-two".