8340644 has 12 divisors (see below), whose sum is σ = 15719004. Its totient is φ = 3849504.

The previous prime is 8340641. The next prime is 8340679. The reversal of 8340644 is 4460438.

It can be written as a sum of positive squares in 2 ways, for example, as 1254400 + 7086244 = 1120^2 + 2662^2 .

It is not an unprimeable number, because it can be changed into a prime (8340641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80147 + ... + 80250.

It is an arithmetic number, because the mean of its divisors is an integer number (1309917).

Almost surely, 2^8340644 is an apocalyptic number.

It is an amenable number.

8340644 is a deficient number, since it is larger than the sum of its proper divisors (7378360).

8340644 is a wasteful number, since it uses less digits than its factorization.

8340644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160414 (or 160412 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 8340644 is about 2888.0173129675. The cubic root of 8340644 is about 202.7993357924.

The spelling of 8340644 in words is "eight million, three hundred forty thousand, six hundred forty-four".