906396885 has 80 divisors (see below), whose sum is σ = 1693177200. Its totient is φ = 463325184.

The previous prime is 906396877. The next prime is 906396889. The reversal of 906396885 is 588693609.

It can be written as a sum of positive squares in 8 ways, for example, as 6036849 + 900360036 = 2457^2 + 30006^2 .

It is not a de Polignac number, because 906396885 - 2³ = 906396877 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906396889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2689437 + ... + 2689773.

It is an arithmetic number, because the mean of its divisors is an integer number (21164715).

Almost surely, 2^906396885 is an apocalyptic number.

It is an amenable number.

906396885 is a deficient number, since it is larger than the sum of its proper divisors (786780315).

906396885 is a wasteful number, since it uses less digits than its factorization.

906396885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 906396885 is about 30106.4259751967. The cubic root of 906396885 is about 967.7714399730.

The spelling of 906396885 in words is "nine hundred six million, three hundred ninety-six thousand, eight hundred eighty-five".