906686885 has 16 divisors (see below), whose sum is σ = 1212125040. Its totient is φ = 646464000.

The previous prime is 906686867. The next prime is 906686923. The reversal of 906686885 is 588686609.

906686885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 6806881 + 899880004 = 2609^2 + 29998^2 .

It is not a de Polignac number, because 906686885 - 2¹² = 906682789 is a prime.

It is a super-2 number, since 2×906686885² = 1644162214862006450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 906686885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238616 + ... + 242385.

It is an arithmetic number, because the mean of its divisors is an integer number (75757815).

Almost surely, 2^906686885 is an apocalyptic number.

It is an amenable number.

906686885 is a deficient number, since it is larger than the sum of its proper divisors (305438155).

906686885 is a wasteful number, since it uses less digits than its factorization.

906686885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481048.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The square root of 906686885 is about 30111.2418375596. The cubic root of 906686885 is about 967.8746411924.

The spelling of 906686885 in words is "nine hundred six million, six hundred eighty-six thousand, eight hundred eighty-five".