665351516 has 12 divisors (see below), whose sum is σ = 1164554160. Its totient is φ = 332621760.

The previous prime is 665351503. The next prime is 665351537. The reversal of 665351516 is 615153566.

It is a self number, because there is not a number n which added to its sum of digits gives 665351516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29300 + ... + 46788.

It is an arithmetic number, because the mean of its divisors is an integer number (97046180).

Almost surely, 2^665351516 is an apocalyptic number.

It is an amenable number.

665351516 is a deficient number, since it is larger than the sum of its proper divisors (499202644).

665351516 is a wasteful number, since it uses less digits than its factorization.

665351516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27004 (or 27002 counting only the distinct ones).

The product of its digits is 81000, while the sum is 38.

The square root of 665351516 is about 25794.4086189236. The cubic root of 665351516 is about 873.0056416156.

The spelling of 665351516 in words is "six hundred sixty-five million, three hundred fifty-one thousand, five hundred sixteen".