397646574 has 16 divisors (see below), whose sum is σ = 856469712. Its totient is φ = 122352768.

The previous prime is 397646551. The next prime is 397646593. The reversal of 397646574 is 475646793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548939 + ... + 2549094.

It is an arithmetic number, because the mean of its divisors is an integer number (53529357).

Almost surely, 2^397646574 is an apocalyptic number.

397646574 is an abundant number, since it is smaller than the sum of its proper divisors (458823138).

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

397646574 is a wasteful number, since it uses less digits than its factorization.

397646574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5098051.

The product of its digits is 3810240, while the sum is 51.

The square root of 397646574 is about 19941.0775536329. The cubic root of 397646574 is about 735.3584405611.

The spelling of 397646574 in words is "three hundred ninety-seven million, six hundred forty-six thousand, five hundred seventy-four".