866533877 has 24 divisors (see below), whose sum is σ = 1030071168. Its totient is φ = 725563520.

The previous prime is 866533873. The next prime is 866533897. The reversal of 866533877 is 778335668.

It is not a de Polignac number, because 866533877 - 2² = 866533873 is a prime.

It is a super-2 number, since 2×866533877² = 1501761919977302258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866533873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92198 + ... + 101160.

It is an arithmetic number, because the mean of its divisors is an integer number (42919632).

Almost surely, 2^866533877 is an apocalyptic number.

It is an amenable number.

866533877 is a deficient number, since it is larger than the sum of its proper divisors (163537291).

866533877 is a wasteful number, since it uses less digits than its factorization.

866533877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049 (or 9038 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 53.

The square root of 866533877 is about 29436.9474810144. The cubic root of 866533877 is about 953.3708055619.

The spelling of 866533877 in words is "eight hundred sixty-six million, five hundred thirty-three thousand, eight hundred seventy-seven".