685517006734 has 16 divisors (see below), whose sum is σ = 1175182720128. Its totient is φ = 293790325752.

The previous prime is 685517006731. The next prime is 685517006767. The reversal of 685517006734 is 437600715586.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685517006731) 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, 2600157 + ... + 2851639.

It is an arithmetic number, because the mean of its divisors is an integer number (73448920008).

Almost surely, 2^685517006734 is an apocalyptic number.

685517006734 is a deficient number, since it is larger than the sum of its proper divisors (489665713394).

685517006734 is a wasteful number, since it uses less digits than its factorization.

685517006734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446199.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 685517006734 in words is "six hundred eighty-five billion, five hundred seventeen million, six thousand, seven hundred thirty-four".