8649906 has 32 divisors (see below), whose sum is σ = 18480960. Its totient is φ = 2689536.

The previous prime is 8649887. The next prime is 8649911. The reversal of 8649906 is 6099468.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13665 + ... + 14283.

It is an arithmetic number, because the mean of its divisors is an integer number (577530).

Almost surely, 2^8649906 is an apocalyptic number.

8649906 is an abundant number, since it is smaller than the sum of its proper divisors (9831054).

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

8649906 is a wasteful number, since it uses less digits than its factorization.

8649906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 8649906 is about 2941.0722534477. The cubic root of 8649906 is about 205.2755050464.

The spelling of 8649906 in words is "eight million, six hundred forty-nine thousand, nine hundred six".