660042696 has 64 divisors (see below), whose sum is σ = 1678838400. Its totient is φ = 216204800.

The previous prime is 660042689. The next prime is 660042701. The reversal of 660042696 is 696240066.

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 15 ways as a sum of consecutive naturals, for example, 866956 + ... + 867716.

It is an arithmetic number, because the mean of its divisors is an integer number (26231850).

Almost surely, 2^660042696 is an apocalyptic number.

It is an amenable number.

660042696 is an abundant number, since it is smaller than the sum of its proper divisors (1018795704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

660042696 is a wasteful number, since it uses less digits than its factorization.

660042696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350 (or 1346 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 660042696 is about 25691.2961136646. The cubic root of 660042696 is about 870.6775432816.

The spelling of 660042696 in words is "six hundred sixty million, forty-two thousand, six hundred ninety-six".