866974772 has 24 divisors (see below), whose sum is σ = 1643818176. Its totient is φ = 398498688.

The previous prime is 866974763. The next prime is 866974781. The reversal of 866974772 is 277479668.

It is an interprime number because it is at equal distance from previous prime (866974763) and next prime (866974781).

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 7 ways as a sum of consecutive naturals, for example, 145328 + ... + 151175.

It is an arithmetic number, because the mean of its divisors is an integer number (68492424).

Almost surely, 2^866974772 is an apocalyptic number.

It is an amenable number.

866974772 is a deficient number, since it is larger than the sum of its proper divisors (776843404).

866974772 is a wasteful number, since it uses less digits than its factorization.

866974772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296567 (or 296565 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 56.

The square root of 866974772 is about 29444.4353316548. The cubic root of 866974772 is about 953.5324707752.

The spelling of 866974772 in words is "eight hundred sixty-six million, nine hundred seventy-four thousand, seven hundred seventy-two".