685373938 has 16 divisors (see below), whose sum is σ = 1089021024. Its totient is φ = 322384960.

The previous prime is 685373933. The next prime is 685373939. The reversal of 685373938 is 839373586.

It is not an unprimeable number, because it can be changed into a prime (685373933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140781 + ... + 145567.

It is an arithmetic number, because the mean of its divisors is an integer number (68063814).

Almost surely, 2^685373938 is an apocalyptic number.

685373938 is a deficient number, since it is larger than the sum of its proper divisors (403647086).

685373938 is a wasteful number, since it uses less digits than its factorization.

685373938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9017.

The product of its digits is 3265920, while the sum is 52.

The square root of 685373938 is about 26179.6474002229. The cubic root of 685373938 is about 881.6763577935.

The spelling of 685373938 in words is "six hundred eighty-five million, three hundred seventy-three thousand, nine hundred thirty-eight".