660256632 has 48 divisors (see below), whose sum is σ = 2043653040. Its totient is φ = 188644608.

The previous prime is 660256621. The next prime is 660256633. The reversal of 660256632 is 236652066.

660256632 is a `hidden beast` number, since 6 + 60 + 2 + 566 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660256633) 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, 654513 + ... + 655520.

It is an arithmetic number, because the mean of its divisors is an integer number (42576105).

Almost surely, 2^660256632 is an apocalyptic number.

It is an amenable number.

660256632 is an abundant number, since it is smaller than the sum of its proper divisors (1383396408).

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

660256632 is a wasteful number, since it uses less digits than its factorization.

660256632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310052 (or 1310045 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 660256632 is about 25695.4593654210. The cubic root of 660256632 is about 870.7716024240.

It can be divided in two parts, 6602566 and 32, that multiplied together give a palindrome (211282112).

The spelling of 660256632 in words is "six hundred sixty million, two hundred fifty-six thousand, six hundred thirty-two".