660654632 has 32 divisors (see below), whose sum is σ = 1358920800. Its totient is φ = 298612800.

The previous prime is 660654619. The next prime is 660654637. The reversal of 660654632 is 236456066.

It is not an unprimeable number, because it can be changed into a prime (660654637) 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, 5219 + ... + 36722.

It is an arithmetic number, because the mean of its divisors is an integer number (42466275).

Almost surely, 2^660654632 is an apocalyptic number.

It is an amenable number.

660654632 is an abundant number, since it is smaller than the sum of its proper divisors (698266168).

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

660654632 is a wasteful number, since it uses less digits than its factorization.

660654632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42137 (or 42133 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 660654632 is about 25703.2027576331. The cubic root of 660654632 is about 870.9465331342.

The spelling of 660654632 in words is "six hundred sixty million, six hundred fifty-four thousand, six hundred thirty-two".