866495472 has 20 divisors (see below), whose sum is σ = 2238446760. Its totient is φ = 288831808.

The previous prime is 866495459. The next prime is 866495501. The reversal of 866495472 is 274594668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9025947 + ... + 9026042.

It is an arithmetic number, because the mean of its divisors is an integer number (111922338).

Almost surely, 2^866495472 is an apocalyptic number.

It is an amenable number.

866495472 is an abundant number, since it is smaller than the sum of its proper divisors (1371951288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

866495472 is a wasteful number, since it uses less digits than its factorization.

866495472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052000 (or 18051994 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 866495472 is about 29436.2951473177. The cubic root of 866495472 is about 953.3567208090.

The spelling of 866495472 in words is "eight hundred sixty-six million, four hundred ninety-five thousand, four hundred seventy-two".