660065368 has 16 divisors (see below), whose sum is σ = 1263955680. Its totient is φ = 323010528.

The previous prime is 660065359. The next prime is 660065383. The reversal of 660065368 is 863560066.

It is a self number, because there is not a number n which added to its sum of digits gives 660065368.

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, 877371 + ... + 878122.

It is an arithmetic number, because the mean of its divisors is an integer number (78997230).

Almost surely, 2^660065368 is an apocalyptic number.

It is an amenable number.

660065368 is a deficient number, since it is larger than the sum of its proper divisors (603890312).

660065368 is a wasteful number, since it uses less digits than its factorization.

660065368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755546 (or 1755542 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 660065368 is about 25691.7373488054. The cubic root of 660065368 is about 870.6875122202.

The spelling of 660065368 in words is "six hundred sixty million, sixty-five thousand, three hundred sixty-eight".