373640644 has 36 divisors (see below), whose sum is σ = 727714092. Its totient is φ = 166864320.

The previous prime is 373640621. The next prime is 373640651. The reversal of 373640644 is 446046373.

373640644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 221414400 + 152226244 = 14880^2 + 12338^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46234 + ... + 53710.

Almost surely, 2^373640644 is an apocalyptic number.

It is an amenable number.

373640644 is a deficient number, since it is larger than the sum of its proper divisors (354073448).

373640644 is a wasteful number, since it uses less digits than its factorization.

373640644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556 (or 7523 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

The square root of 373640644 is about 19329.7864447593. The cubic root of 373640644 is about 720.2523832290.

The spelling of 373640644 in words is "three hundred seventy-three million, six hundred forty thousand, six hundred forty-four".