685946693628 has 36 divisors (see below), whose sum is σ = 1981623782320. Its totient is φ = 195984769536.

The previous prime is 685946693609. The next prime is 685946693671. The reversal of 685946693628 is 826396649586.

685946693628 is a `hidden beast` number, since 6 + 8 + 59 + 466 + 93 + 6 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1361005093 + ... + 1361005596.

Almost surely, 2^685946693628 is an apocalyptic number.

It is an amenable number.

685946693628 is an abundant number, since it is smaller than the sum of its proper divisors (1295677088692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685946693628 is a wasteful number, since it uses less digits than its factorization.

685946693628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722010706 (or 2722010701 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 72.

The spelling of 685946693628 in words is "six hundred eighty-five billion, nine hundred forty-six million, six hundred ninety-three thousand, six hundred twenty-eight".