685694960 has 40 divisors (see below), whose sum is σ = 1596775776. Its totient is φ = 273841920.

The previous prime is 685694953. The next prime is 685694963. The reversal of 685694960 is 69496586.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685694963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46397 + ... + 59363.

Almost surely, 2^685694960 is an apocalyptic number.

It is an amenable number.

685694960 is an abundant number, since it is smaller than the sum of its proper divisors (911080816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685694960 is a wasteful number, since it uses less digits than its factorization.

685694960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13641 (or 13635 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The square root of 685694960 is about 26185.7778192667. Note that the first 3 decimals coincide. The cubic root of 685694960 is about 881.8139923085.

The spelling of 685694960 in words is "six hundred eighty-five million, six hundred ninety-four thousand, nine hundred sixty".