866478095 has 24 divisors (see below), whose sum is σ = 1230743904. Its totient is φ = 573648768.

The previous prime is 866478073. The next prime is 866478113. The reversal of 866478095 is 590874668.

866478095 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 29436²-1.

It is not a de Polignac number, because 866478095 - 2⁸ = 866477839 is a prime.

It is a super-2 number, since 2×866478095² = 1501568578229658050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14717 + ... + 44153.

It is an arithmetic number, because the mean of its divisors is an integer number (51280996).

Almost surely, 2^866478095 is an apocalyptic number.

866478095 is a deficient number, since it is larger than the sum of its proper divisors (364265809).

866478095 is a wasteful number, since it uses less digits than its factorization.

866478095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29507 (or 29478 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The square root of 866478095 is about 29435.9999830140. Note that the first 4 decimals coincide. The cubic root of 866478095 is about 953.3503477845.

The spelling of 866478095 in words is "eight hundred sixty-six million, four hundred seventy-eight thousand, ninety-five".