744215680 has 64 divisors (see below), whose sum is σ = 1916019000. Its totient is φ = 274784256.

The previous prime is 744215657. The next prime is 744215687. The reversal of 744215680 is 86512447.

It can be written as a sum of positive squares in 4 ways, for example, as 592630336 + 151585344 = 24344^2 + 12312^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (744215687) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36405 + ... + 53044.

Almost surely, 2^744215680 is an apocalyptic number.

It is an amenable number.

744215680 is an abundant number, since it is smaller than the sum of its proper divisors (1171803320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

744215680 is a wasteful number, since it uses less digits than its factorization.

744215680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89481 (or 89469 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 744215680 is about 27280.3167137040. The cubic root of 744215680 is about 906.2185309406.

The spelling of 744215680 in words is "seven hundred forty-four million, two hundred fifteen thousand, six hundred eighty".