866485008 has 30 divisors (see below), whose sum is σ = 2424954974. Its totient is φ = 288828288.

The previous prime is 866484991. The next prime is 866485027. The reversal of 866485008 is 800584668.

866485008 is a `hidden beast` number, since 86 + 64 + 8 + 500 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 782432784 + 84052224 = 27972^2 + 9168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3008485 + ... + 3008772.

Almost surely, 2^866485008 is an apocalyptic number.

It is an amenable number.

866485008 is an abundant number, since it is smaller than the sum of its proper divisors (1558469966).

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

866485008 is a wasteful number, since it uses less digits than its factorization.

866485008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6017271 (or 6017262 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 866485008 is about 29436.1174070223. The cubic root of 866485008 is about 953.3528831413.

The spelling of 866485008 in words is "eight hundred sixty-six million, four hundred eighty-five thousand, eight".