660808982 has 16 divisors (see below), whose sum is σ = 1022096880. Its totient is φ = 320260512.

The previous prime is 660808979. The next prime is 660808997. The reversal of 660808982 is 289808066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28757 + ... + 46352.

It is an arithmetic number, because the mean of its divisors is an integer number (63881055).

Almost surely, 2^660808982 is an apocalyptic number.

660808982 is a deficient number, since it is larger than the sum of its proper divisors (361287898).

660808982 is a wasteful number, since it uses less digits than its factorization.

660808982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75247.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 660808982 is about 25706.2051263892. The cubic root of 660808982 is about 871.0143548185.

The spelling of 660808982 in words is "six hundred sixty million, eight hundred eight thousand, nine hundred eighty-two".