866493164 has 18 divisors (see below), whose sum is σ = 1524044844. Its totient is φ = 431056000.

The previous prime is 866493149. The next prime is 866493197. The reversal of 866493164 is 461394668.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 932252 + ... + 933180.

It is an arithmetic number, because the mean of its divisors is an integer number (84669158).

Almost surely, 2^866493164 is an apocalyptic number.

It is an amenable number.

866493164 is a deficient number, since it is larger than the sum of its proper divisors (657551680).

866493164 is an equidigital number, since it uses as much as digits as its factorization.

866493164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113 (or 1182 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 866493164 is about 29436.2559439885. The cubic root of 866493164 is about 953.3558743536.

The spelling of 866493164 in words is "eight hundred sixty-six million, four hundred ninety-three thousand, one hundred sixty-four".