685709504 has 14 divisors (see below), whose sum is σ = 1360704924. Its totient is φ = 342854720.

The previous prime is 685709483. The next prime is 685709509. The reversal of 685709504 is 405907586.

It is not an unprimeable number, because it can be changed into a prime (685709509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5357042 + ... + 5357169.

Almost surely, 2^685709504 is an apocalyptic number.

685709504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

685709504 is a deficient number, since it is larger than the sum of its proper divisors (674995420).

685709504 is a wasteful number, since it uses less digits than its factorization.

685709504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10714223 (or 10714213 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 685709504 is about 26186.0555257946. The cubic root of 685709504 is about 881.8202268651.

The spelling of 685709504 in words is "six hundred eighty-five million, seven hundred nine thousand, five hundred four".