685318375 has 32 divisors (see below), whose sum is σ = 979670016. Its totient is φ = 468871200.

The previous prime is 685318357. The next prime is 685318397. The reversal of 685318375 is 573813586.

It is not a de Polignac number, because 685318375 - 2¹⁹ = 684794087 is a prime.

It is a super-2 number, since 2×685318375² = 939322550225281250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772182 + ... + 773068.

It is an arithmetic number, because the mean of its divisors is an integer number (30614688).

Almost surely, 2^685318375 is an apocalyptic number.

685318375 is a deficient number, since it is larger than the sum of its proper divisors (294351641).

685318375 is an equidigital number, since it uses as much as digits as its factorization.

685318375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792 (or 1782 counting only the distinct ones).

The product of its digits is 604800, while the sum is 46.

The square root of 685318375 is about 26178.5861917713. The cubic root of 685318375 is about 881.6525314293.

The spelling of 685318375 in words is "six hundred eighty-five million, three hundred eighteen thousand, three hundred seventy-five".