38666197 has 12 divisors (see below), whose sum is σ = 42558880. Its totient is φ = 35029368.

The previous prime is 38666189. The next prime is 38666213. The reversal of 38666197 is 79166683.

It is not a de Polignac number, because 38666197 - 2³ = 38666189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38666597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8128 + ... + 11974.

Almost surely, 2^38666197 is an apocalyptic number.

It is an amenable number.

38666197 is a deficient number, since it is larger than the sum of its proper divisors (3892683).

38666197 is a wasteful number, since it uses less digits than its factorization.

38666197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3912 (or 3889 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 38666197 is about 6218.2149367805. The cubic root of 38666197 is about 338.1508523323.

The spelling of 38666197 in words is "thirty-eight million, six hundred sixty-six thousand, one hundred ninety-seven".