665550152 has 16 divisors (see below), whose sum is σ = 1249123200. Its totient is φ = 332450640.

The previous prime is 665550143. The next prime is 665550227. The reversal of 665550152 is 251055566.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31724 + ... + 48347.

It is an arithmetic number, because the mean of its divisors is an integer number (78070200).

Almost surely, 2^665550152 is an apocalyptic number.

It is an amenable number.

665550152 is a deficient number, since it is larger than the sum of its proper divisors (583573048).

665550152 is a wasteful number, since it uses less digits than its factorization.

665550152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81116 (or 81112 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 665550152 is about 25798.2587009279. The cubic root of 665550152 is about 873.0925095296.

The spelling of 665550152 in words is "six hundred sixty-five million, five hundred fifty thousand, one hundred fifty-two".