660520316 has 6 divisors (see below), whose sum is σ = 1155910560. Its totient is φ = 330260156.

The previous prime is 660520297. The next prime is 660520349. The reversal of 660520316 is 613025066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82565036 + ... + 82565043.

It is an arithmetic number, because the mean of its divisors is an integer number (192651760).

Almost surely, 2^660520316 is an apocalyptic number.

It is an amenable number.

660520316 is a deficient number, since it is larger than the sum of its proper divisors (495390244).

660520316 is a wasteful number, since it uses less digits than its factorization.

660520316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165130083 (or 165130081 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 660520316 is about 25700.5897986797. The cubic root of 660520316 is about 870.8875058313.

The spelling of 660520316 in words is "six hundred sixty million, five hundred twenty thousand, three hundred sixteen".