665602316 has 12 divisors (see below), whose sum is σ = 1204969920. Its totient is φ = 321325200.

The previous prime is 665602291. The next prime is 665602331. The reversal of 665602316 is 613206566.

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 3 ways as a sum of consecutive naturals, for example, 2868860 + ... + 2869091.

It is an arithmetic number, because the mean of its divisors is an integer number (100414160).

Almost surely, 2^665602316 is an apocalyptic number.

It is an amenable number.

665602316 is a deficient number, since it is larger than the sum of its proper divisors (539367604).

665602316 is a wasteful number, since it uses less digits than its factorization.

665602316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737984 (or 5737982 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 665602316 is about 25799.2696795859. The cubic root of 665602316 is about 873.1153191344.

The spelling of 665602316 in words is "six hundred sixty-five million, six hundred two thousand, three hundred sixteen".