8657997397 has 8 divisors (see below), whose sum is σ = 9903833856. Its totient is φ = 7414405872.

The previous prime is 8657997377. The next prime is 8657997431. The reversal of 8657997397 is 7937997568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8657997397 - 2²⁷ = 8523779669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8657997307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552958 + ... + 568399.

It is an arithmetic number, because the mean of its divisors is an integer number (1237979232).

Almost surely, 2^8657997397 is an apocalyptic number.

It is an amenable number.

8657997397 is a deficient number, since it is larger than the sum of its proper divisors (1245836459).

8657997397 is a wasteful number, since it uses less digits than its factorization.

8657997397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122467.

The product of its digits is 180033840, while the sum is 70.

The square root of 8657997397 is about 93048.3605282758. The cubic root of 8657997397 is about 2053.3949217597.

The spelling of 8657997397 in words is "eight billion, six hundred fifty-seven million, nine hundred ninety-seven thousand, three hundred ninety-seven".