3997658475 has 48 divisors (see below), whose sum is σ = 7580784640. Its totient is φ = 2063296800.

The previous prime is 3997658471. The next prime is 3997658521. The reversal of 3997658475 is 5748567993.

3997658475 is a `hidden beast` number, since 3 + 99 + 76 + 5 + 8 + 475 = 666.

It is not a de Polignac number, because 3997658475 - 2² = 3997658471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3997658471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74599 + ... + 116448.

Almost surely, 2^3997658475 is an apocalyptic number.

3997658475 is a deficient number, since it is larger than the sum of its proper divisors (3583126165).

3997658475 is a wasteful number, since it uses less digits than its factorization.

3997658475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191097 (or 191086 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 63.

The square root of 3997658475 is about 63227.0391130251. The cubic root of 3997658475 is about 1587.0912465716.

The spelling of 3997658475 in words is "three billion, nine hundred ninety-seven million, six hundred fifty-eight thousand, four hundred seventy-five".