2990670644 has 48 divisors (see below), whose sum is σ = 5777488080. Its totient is φ = 1354055040.

The previous prime is 2990670619. The next prime is 2990670653. The reversal of 2990670644 is 4460760992.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2062249744 + 928420900 = 45412^2 + 30470^2 .

It is a super-2 number, since 2×2990670644² = 17888221801766749472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462554 + ... + 468974.

It is an arithmetic number, because the mean of its divisors is an integer number (120364335).

Almost surely, 2^2990670644 is an apocalyptic number.

It is an amenable number.

2990670644 is a deficient number, since it is larger than the sum of its proper divisors (2786817436).

2990670644 is a wasteful number, since it uses less digits than its factorization.

2990670644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517 (or 6489 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 2990670644 is about 54687.0244573610. The cubic root of 2990670644 is about 1440.7529890312.

The spelling of 2990670644 in words is "two billion, nine hundred ninety million, six hundred seventy thousand, six hundred forty-four".