8173906 has 16 divisors (see below), whose sum is σ = 13981464. Its totient is φ = 3550464.

The previous prime is 8173903. The next prime is 8173927. The reversal of 8173906 is 6093718.

It can be written as a sum of positive squares in 4 ways, for example, as 6375625 + 1798281 = 2525^2 + 1341^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (8173903) 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 7 ways as a sum of consecutive naturals, for example, 8805 + ... + 9688.

Almost surely, 2^8173906 is an apocalyptic number.

8173906 is a deficient number, since it is larger than the sum of its proper divisors (5807558).

8173906 is a wasteful number, since it uses less digits than its factorization.

8173906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18525.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 8173906 is about 2859.0043721548. The cubic root of 8173906 is about 201.4388405331.

The spelling of 8173906 in words is "eight million, one hundred seventy-three thousand, nine hundred six".