660556652 has 36 divisors (see below), whose sum is σ = 1347295320. Its totient is φ = 282550464.

The previous prime is 660556651. The next prime is 660556657. The reversal of 660556652 is 256655066.

It is not an unprimeable number, because it can be changed into a prime (660556651) 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, 108563 + ... + 114485.

It is an arithmetic number, because the mean of its divisors is an integer number (37424870).

Almost surely, 2^660556652 is an apocalyptic number.

It is an amenable number.

660556652 is an abundant number, since it is smaller than the sum of its proper divisors (686738668).

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

660556652 is a wasteful number, since it uses less digits than its factorization.

660556652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 6501 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 41.

The square root of 660556652 is about 25701.2966988049. The cubic root of 660556652 is about 870.9034750540.

The spelling of 660556652 in words is "six hundred sixty million, five hundred fifty-six thousand, six hundred fifty-two".