865479906 has 48 divisors (see below), whose sum is σ = 2022078240. Its totient is φ = 266639040.

The previous prime is 865479899. The next prime is 865479907. The reversal of 865479906 is 609974568.

865479906 is a `hidden beast` number, since 8 + 6 + 547 + 9 + 90 + 6 = 666.

865479906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (865479907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16840 + ... + 44883.

It is an arithmetic number, because the mean of its divisors is an integer number (42126630).

Almost surely, 2^865479906 is an apocalyptic number.

865479906 is an abundant number, since it is smaller than the sum of its proper divisors (1156598334).

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

865479906 is a wasteful number, since it uses less digits than its factorization.

865479906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61791 (or 61788 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 865479906 is about 29419.0398551686. The cubic root of 865479906 is about 952.9841182954.

The spelling of 865479906 in words is "eight hundred sixty-five million, four hundred seventy-nine thousand, nine hundred six".