8090644 has 6 divisors (see below), whose sum is σ = 14158634. Its totient is φ = 4045320.

The previous prime is 8090639. The next prime is 8090647. The reversal of 8090644 is 4460908.

It can be written as a sum of positive squares in only one way, i.e., 5466244 + 2624400 = 2338^2 + 1620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8090647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011327 + ... + 1011334.

Almost surely, 2^8090644 is an apocalyptic number.

It is an amenable number.

8090644 is a deficient number, since it is larger than the sum of its proper divisors (6067990).

8090644 is a wasteful number, since it uses less digits than its factorization.

8090644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022665 (or 2022663 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 8090644 is about 2844.4057375839. The cubic root of 8090644 is about 200.7525315963.

The spelling of 8090644 in words is "eight million, ninety thousand, six hundred forty-four".