8640122 has 4 divisors (see below), whose sum is σ = 12960186. Its totient is φ = 4320060.

The previous prime is 8640109. The next prime is 8640133. The reversal of 8640122 is 2210468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8637721 + 2401 = 2939^2 + 49^2 .

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 as a sum of consecutive naturals, namely, 2160029 + ... + 2160032.

Almost surely, 2^8640122 is an apocalyptic number.

8640122 is a deficient number, since it is larger than the sum of its proper divisors (4320064).

8640122 is a wasteful number, since it uses less digits than its factorization.

8640122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320063.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8640122 is about 2939.4084438880. The cubic root of 8640122 is about 205.1980794164.

The spelling of 8640122 in words is "eight million, six hundred forty thousand, one hundred twenty-two".