660952680 has 64 divisors (see below), whose sum is σ = 1985480640. Its totient is φ = 176020992.

The previous prime is 660952657. The next prime is 660952709. The reversal of 660952680 is 86259066.

660952680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 25709²-1.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99627 + ... + 106053.

It is an arithmetic number, because the mean of its divisors is an integer number (31023135).

Almost surely, 2^660952680 is an apocalyptic number.

660952680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660952680 is an abundant number, since it is smaller than the sum of its proper divisors (1324527960).

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

660952680 is a wasteful number, since it uses less digits than its factorization.

660952680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7298 (or 7294 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 660952680 is about 25708.9999805516. Note that the first 4 decimals coincide. The cubic root of 660952680 is about 871.0774865014.

The spelling of 660952680 in words is "six hundred sixty million, nine hundred fifty-two thousand, six hundred eighty".