8398566670 has 16 divisors (see below), whose sum is σ = 16280298720. Its totient is φ = 3101009184.

The previous prime is 8398566643. The next prime is 8398566809. The reversal of 8398566670 is 766658938.

It is a super-2 number, since 2×8398566670² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32302050 + ... + 32302309.

It is an arithmetic number, because the mean of its divisors is an integer number (1017518670).

Almost surely, 2^8398566670 is an apocalyptic number.

8398566670 is a deficient number, since it is larger than the sum of its proper divisors (7881732050).

8398566670 is a wasteful number, since it uses less digits than its factorization.

8398566670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64604379.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The square root of 8398566670 is about 91643.6941093057. The cubic root of 8398566670 is about 2032.6770855138.

The spelling of 8398566670 in words is "eight billion, three hundred ninety-eight million, five hundred sixty-six thousand, six hundred seventy".