660427272 has 48 divisors (see below), whose sum is σ = 1789856640. Its totient is φ = 219994848.

The previous prime is 660427253. The next prime is 660427283. The reversal of 660427272 is 272724066.

660427272 is a `hidden beast` number, since 6 + 604 + 27 + 27 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181293 + ... + 184899.

It is an arithmetic number, because the mean of its divisors is an integer number (37288680).

Almost surely, 2^660427272 is an apocalyptic number.

It is an amenable number.

660427272 is an abundant number, since it is smaller than the sum of its proper divisors (1129429368).

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

660427272 is a wasteful number, since it uses less digits than its factorization.

660427272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162 (or 6155 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 660427272 is about 25698.7795819179. The cubic root of 660427272 is about 870.8466114736.

The spelling of 660427272 in words is "six hundred sixty million, four hundred twenty-seven thousand, two hundred seventy-two".