8640412 has 24 divisors (see below), whose sum is σ = 16571520. Its totient is φ = 3909360.

The previous prime is 8640409. The next prime is 8640419. The reversal of 8640412 is 2140468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640419) 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, 15523 + ... + 16069.

It is an arithmetic number, because the mean of its divisors is an integer number (690480).

Almost surely, 2^8640412 is an apocalyptic number.

It is an amenable number.

8640412 is a deficient number, since it is larger than the sum of its proper divisors (7931108).

8640412 is a wasteful number, since it uses less digits than its factorization.

8640412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 8640412 is about 2939.4577731276. The cubic root of 8640412 is about 205.2003751701.

The spelling of 8640412 in words is "eight million, six hundred forty thousand, four hundred twelve".