666358080696 has 216 divisors, whose sum is σ = 2307571189560. Its totient is φ = 173079910080.

The previous prime is 666358080637. The next prime is 666358080697. The reversal of 666358080696 is 696080853666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666358080697) by changing a digit.

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 53 ways as a sum of consecutive naturals, for example, 353596 + ... + 1207371.

Almost surely, 2^666358080696 is an apocalyptic number.

666358080696 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

666358080696 is an abundant number, since it is smaller than the sum of its proper divisors (1641213108864).

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

666358080696 is a wasteful number, since it uses less digits than its factorization.

666358080696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561015 (or 1560990 counting only the distinct ones).

The product of its (nonzero) digits is 67184640, while the sum is 63.

The spelling of 666358080696 in words is "six hundred sixty-six billion, three hundred fifty-eight million, eighty thousand, six hundred ninety-six".