866492907 has 16 divisors (see below), whose sum is σ = 1398039552. Its totient is φ = 466012800.

The previous prime is 866492897. The next prime is 866492917. The reversal of 866492907 is 709294668.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (866492897) and next prime (866492917).

It is not a de Polignac number, because 866492907 - 2⁸ = 866492651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 866492907.

It is not an unprimeable number, because it can be changed into a prime (866492917) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1213219 + ... + 1213932.

It is an arithmetic number, because the mean of its divisors is an integer number (87377472).

Almost surely, 2^866492907 is an apocalyptic number.

866492907 is a deficient number, since it is larger than the sum of its proper divisors (531546645).

866492907 is a wasteful number, since it uses less digits than its factorization.

866492907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427178.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 866492907 is about 29436.2515786233. The cubic root of 866492907 is about 953.3557800992.

The spelling of 866492907 in words is "eight hundred sixty-six million, four hundred ninety-two thousand, nine hundred seven".