685412160687 has 20 divisors (see below), whose sum is σ = 1023915447456. Its totient is φ = 456928879680.

The previous prime is 685412160623. The next prime is 685412160709. The reversal of 685412160687 is 786061214586.

685412160687 is a `hidden beast` number, since 6 + 8 + 5 + 4 + 1 + 21 + 606 + 8 + 7 = 666.

It is not a de Polignac number, because 685412160687 - 2⁶ = 685412160623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685412110687) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3562362 + ... + 3749832.

Almost surely, 2^685412160687 is an apocalyptic number.

685412160687 is a deficient number, since it is larger than the sum of its proper divisors (338503286769).

685412160687 is a wasteful number, since it uses less digits than its factorization.

685412160687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232620 (or 232611 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 685412160687 in words is "six hundred eighty-five billion, four hundred twelve million, one hundred sixty thousand, six hundred eighty-seven".