680396995 has 8 divisors (see below), whose sum is σ = 819730800. Its totient is φ = 542148000.

The previous prime is 680396947. The next prime is 680397013. The reversal of 680396995 is 599693086.

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

It is not a de Polignac number, because 680396995 - 2¹⁵ = 680364227 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269820 + ... + 272329.

It is an arithmetic number, because the mean of its divisors is an integer number (102466350).

Almost surely, 2^680396995 is an apocalyptic number.

680396995 is a deficient number, since it is larger than the sum of its proper divisors (139333805).

680396995 is a wasteful number, since it uses less digits than its factorization.

680396995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542405.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 680396995 is about 26084.4205417717. The cubic root of 680396995 is about 879.5370304923.

The spelling of 680396995 in words is "six hundred eighty million, three hundred ninety-six thousand, nine hundred ninety-five".