397874685 has 32 divisors (see below), whose sum is σ = 692012160. Its totient is φ = 194035968.

The previous prime is 397874671. The next prime is 397874753. The reversal of 397874685 is 586478793.

It is not a de Polignac number, because 397874685 - 2¹¹ = 397872637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11331 + ... + 30399.

It is an arithmetic number, because the mean of its divisors is an integer number (21625380).

Almost surely, 2^397874685 is an apocalyptic number.

It is an amenable number.

397874685 is a deficient number, since it is larger than the sum of its proper divisors (294137475).

397874685 is a wasteful number, since it uses less digits than its factorization.

397874685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19197.

The product of its digits is 10160640, while the sum is 57.

The square root of 397874685 is about 19946.7963593154. The cubic root of 397874685 is about 735.4990271145.

The spelling of 397874685 in words is "three hundred ninety-seven million, eight hundred seventy-four thousand, six hundred eighty-five".