866947137 has 16 divisors (see below), whose sum is σ = 1322160000. Its totient is φ = 494986752.

The previous prime is 866947117. The next prime is 866947139. The reversal of 866947137 is 731749668.

It is not a de Polignac number, because 866947137 - 2⁸ = 866946881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866947137.

It is not an unprimeable number, because it can be changed into a prime (866947139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9703 + ... + 42755.

It is an arithmetic number, because the mean of its divisors is an integer number (82635000).

Almost surely, 2^866947137 is an apocalyptic number.

It is an amenable number.

866947137 is a deficient number, since it is larger than the sum of its proper divisors (455212863).

866947137 is a wasteful number, since it uses less digits than its factorization.

866947137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34312.

The product of its digits is 1524096, while the sum is 51.

The square root of 866947137 is about 29443.9660541850. The cubic root of 866947137 is about 953.5223393193.

The spelling of 866947137 in words is "eight hundred sixty-six million, nine hundred forty-seven thousand, one hundred thirty-seven".