866625804 has 60 divisors (see below), whose sum is σ = 2471498568. Its totient is φ = 262612800.

The previous prime is 866625797. The next prime is 866625811. The reversal of 866625804 is 408526668.

866625804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (866625797) and next prime (866625811).

It is a self number, because there is not a number n which added to its sum of digits gives 866625804.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118017 + ... + 125144.

Almost surely, 2^866625804 is an apocalyptic number.

It is an amenable number.

866625804 is an abundant number, since it is smaller than the sum of its proper divisors (1604872764).

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

866625804 is a wasteful number, since it uses less digits than its factorization.

866625804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243188 (or 243177 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 866625804 is about 29438.5088616934. The cubic root of 866625804 is about 953.4045174269.

The spelling of 866625804 in words is "eight hundred sixty-six million, six hundred twenty-five thousand, eight hundred four".