684120795 has 16 divisors (see below), whose sum is σ = 1112538912. Its totient is φ = 358882560.

The previous prime is 684120781. The next prime is 684120823. The reversal of 684120795 is 597021486.

It is not a de Polignac number, because 684120795 - 2⁸ = 684120539 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 372922 + ... + 374751.

It is an arithmetic number, because the mean of its divisors is an integer number (69533682).

Almost surely, 2^684120795 is an apocalyptic number.

684120795 is a deficient number, since it is larger than the sum of its proper divisors (428418117).

684120795 is a wasteful number, since it uses less digits than its factorization.

684120795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747742.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 684120795 is about 26155.7029154255. The cubic root of 684120795 is about 881.1386753394.

The spelling of 684120795 in words is "six hundred eighty-four million, one hundred twenty thousand, seven hundred ninety-five".