665549352 has 64 divisors (see below), whose sum is σ = 1990968000. Its totient is φ = 204783552.

The previous prime is 665549327. The next prime is 665549363. The reversal of 665549352 is 253945566.

665549352 is a `hidden beast` number, since 6 + 6 + 554 + 93 + 5 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 665549298 and 665549307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115702 + ... + 121317.

It is an arithmetic number, because the mean of its divisors is an integer number (31108875).

Almost surely, 2^665549352 is an apocalyptic number.

It is an amenable number.

665549352 is an abundant number, since it is smaller than the sum of its proper divisors (1325418648).

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

665549352 is a wasteful number, since it uses less digits than its factorization.

665549352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237047 (or 237037 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 665549352 is about 25798.2431960008. The cubic root of 665549352 is about 873.0921597065.

The spelling of 665549352 in words is "six hundred sixty-five million, five hundred forty-nine thousand, three hundred fifty-two".