680625176665 has 32 divisors (see below), whose sum is σ = 982038564864. Its totient is φ = 443024847360.

The previous prime is 680625176549. The next prime is 680625176713. The reversal of 680625176665 is 566671526086.

It is not a de Polignac number, because 680625176665 - 2¹⁹ = 680624652377 is a prime.

It is a super-2 number, since 2×680625176665² (a number of 24 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 6356409 + ... + 6462598.

It is an arithmetic number, because the mean of its divisors is an integer number (30688705152).

Almost surely, 2^680625176665 is an apocalyptic number.

It is an amenable number.

680625176665 is a deficient number, since it is larger than the sum of its proper divisors (301413388199).

680625176665 is a wasteful number, since it uses less digits than its factorization.

680625176665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819097.

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 680625176665 in words is "six hundred eighty billion, six hundred twenty-five million, one hundred seventy-six thousand, six hundred sixty-five".