906856686 has 24 divisors (see below), whose sum is σ = 1985116224. Its totient is φ = 299168640.

The previous prime is 906856661. The next prime is 906856703. The reversal of 906856686 is 686658609.

906856686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257950 + ... + 261441.

It is an arithmetic number, because the mean of its divisors is an integer number (82713176).

Almost surely, 2^906856686 is an apocalyptic number.

906856686 is an abundant number, since it is smaller than the sum of its proper divisors (1078259538).

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

906856686 is a wasteful number, since it uses less digits than its factorization.

906856686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519496 (or 519493 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 906856686 is about 30114.0612671224. The cubic root of 906856686 is about 967.9350574274.

The spelling of 906856686 in words is "nine hundred six million, eight hundred fifty-six thousand, six hundred eighty-six".