8640374 has 4 divisors (see below), whose sum is σ = 12960564. Its totient is φ = 4320186.

The previous prime is 8640349. The next prime is 8640391. The reversal of 8640374 is 4730468.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8640374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160092 + ... + 2160095.

It is an arithmetic number, because the mean of its divisors is an integer number (3240141).

Almost surely, 2^8640374 is an apocalyptic number.

8640374 is a deficient number, since it is larger than the sum of its proper divisors (4320190).

8640374 is a wasteful number, since it uses less digits than its factorization.

8640374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320189.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 8640374 is about 2939.4513093433. The cubic root of 8640374 is about 205.2000743502.

The spelling of 8640374 in words is "eight million, six hundred forty thousand, three hundred seventy-four".