685413824 has 14 divisors (see below), whose sum is σ = 1360118184. Its totient is φ = 342706880.

The previous prime is 685413821. The next prime is 685413829. The reversal of 685413824 is 428314586.

It is a super-2 number, since 2×685413824² = 939584220260605952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685413821) 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, 5354732 + ... + 5354859.

Almost surely, 2^685413824 is an apocalyptic number.

685413824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

685413824 is a deficient number, since it is larger than the sum of its proper divisors (674704360).

685413824 is a wasteful number, since it uses less digits than its factorization.

685413824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10709603 (or 10709593 counting only the distinct ones).

The product of its digits is 184320, while the sum is 41.

The square root of 685413824 is about 26180.4091641059. The cubic root of 685413824 is about 881.6934607982.

The spelling of 685413824 in words is "six hundred eighty-five million, four hundred thirteen thousand, eight hundred twenty-four".