866475000 has 144 divisors (see below), whose sum is σ = 2933952840. Its totient is φ = 231000000.

The previous prime is 866474981. The next prime is 866475011. The reversal of 866475000 is 574668.

It is a happy number.

866475000 is a `hidden beast` number, since 8 + 6 + 647 + 5 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 223075 + ... + 226925.

Almost surely, 2^866475000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 866475000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466976420).

866475000 is an abundant number, since it is smaller than the sum of its proper divisors (2067477840).

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

866475000 is a wasteful number, since it uses less digits than its factorization.

866475000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888 (or 3861 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 866475000 is about 29435.9474112861. The cubic root of 866475000 is about 953.3492126826.

The spelling of 866475000 in words is "eight hundred sixty-six million, four hundred seventy-five thousand".