660279996 has 36 divisors (see below), whose sum is σ = 1669882032. Its totient is φ = 219982464.

The previous prime is 660279973. The next prime is 660280037. The reversal of 660279996 is 699972066.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100756 + ... + 107108.

It is an arithmetic number, because the mean of its divisors is an integer number (46385612).

Almost surely, 2^660279996 is an apocalyptic number.

It is an amenable number.

660279996 is an abundant number, since it is smaller than the sum of its proper divisors (1009602036).

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

660279996 is a wasteful number, since it uses less digits than its factorization.

660279996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9250 (or 9245 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 660279996 is about 25695.9139942521. The cubic root of 660279996 is about 870.7818734140.

The spelling of 660279996 in words is "six hundred sixty million, two hundred seventy-nine thousand, nine hundred ninety-six".