685517038 has 16 divisors (see below), whose sum is σ = 1042203600. Its totient is φ = 338147136.

The previous prime is 685517033. The next prime is 685517059. The reversal of 685517038 is 830715586.

685517038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 685516985 and 685517003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685517033) 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, 36988 + ... + 52336.

It is an arithmetic number, because the mean of its divisors is an integer number (65137725).

Almost surely, 2^685517038 is an apocalyptic number.

685517038 is a deficient number, since it is larger than the sum of its proper divisors (356686562).

685517038 is a wasteful number, since it uses less digits than its factorization.

685517038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15651.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 685517038 is about 26182.3802966804. The cubic root of 685517038 is about 881.7377155915.

The spelling of 685517038 in words is "six hundred eighty-five million, five hundred seventeen thousand, thirty-eight".