685716576 has 24 divisors (see below), whose sum is σ = 1800006264. Its totient is φ = 228572160.

The previous prime is 685716557. The next prime is 685716587. The reversal of 685716576 is 675617586.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571345 + ... + 3571536.

It is an arithmetic number, because the mean of its divisors is an integer number (75000261).

Almost surely, 2^685716576 is an apocalyptic number.

It is an amenable number.

685716576 is an abundant number, since it is smaller than the sum of its proper divisors (1114289688).

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

685716576 is a wasteful number, since it uses less digits than its factorization.

685716576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142894 (or 7142886 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 685716576 is about 26186.1905591478. The cubic root of 685716576 is about 881.8232583778.

The spelling of 685716576 in words is "six hundred eighty-five million, seven hundred sixteen thousand, five hundred seventy-six".