680664255 has 8 divisors (see below), whose sum is σ = 1089062832. Its totient is φ = 363020928.

The previous prime is 680664233. The next prime is 680664263. The reversal of 680664255 is 552466086.

680664255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 680664255 - 2⁵ = 680664223 is a prime.

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, 22688794 + ... + 22688823.

It is an arithmetic number, because the mean of its divisors is an integer number (136132854).

Almost surely, 2^680664255 is an apocalyptic number.

680664255 is a deficient number, since it is larger than the sum of its proper divisors (408398577).

680664255 is a wasteful number, since it uses less digits than its factorization.

680664255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45377625.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 680664255 is about 26089.5430201451. The cubic root of 680664255 is about 879.6521761584.

The spelling of 680664255 in words is "six hundred eighty million, six hundred sixty-four thousand, two hundred fifty-five".