685662544970 has 32 divisors (see below), whose sum is σ = 1330353497088. Its totient is φ = 252934751808.

The previous prime is 685662544967. The next prime is 685662544981. The reversal of 685662544970 is 79445266586.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2284784 + ... + 2567403.

It is an arithmetic number, because the mean of its divisors is an integer number (41573546784).

Almost surely, 2^685662544970 is an apocalyptic number.

685662544970 is a deficient number, since it is larger than the sum of its proper divisors (644690952118).

685662544970 is a wasteful number, since it uses less digits than its factorization.

685662544970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853294.

The product of its (nonzero) digits is 87091200, while the sum is 62.

The spelling of 685662544970 in words is "six hundred eighty-five billion, six hundred sixty-two million, five hundred forty-four thousand, nine hundred seventy".