906823172 has 6 divisors (see below), whose sum is σ = 1586940558. Its totient is φ = 453411584.

The previous prime is 906823171. The next prime is 906823189. The reversal of 906823172 is 271328609.

It can be written as a sum of positive squares in only one way, i.e., 903844096 + 2979076 = 30064^2 + 1726^2 .

It is a super-2 number, since 2×906823172² = 1644656530552283168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (906823171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113352893 + ... + 113352900.

It is an arithmetic number, because the mean of its divisors is an integer number (264490093).

Almost surely, 2^906823172 is an apocalyptic number.

It is an amenable number.

906823172 is a deficient number, since it is larger than the sum of its proper divisors (680117386).

906823172 is a wasteful number, since it uses less digits than its factorization.

906823172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226705797 (or 226705795 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 906823172 is about 30113.5048109648. The cubic root of 906823172 is about 967.9231335385.

The spelling of 906823172 in words is "nine hundred six million, eight hundred twenty-three thousand, one hundred seventy-two".