612399744 has 256 divisors, whose sum is σ = 2004912000. Its totient is φ = 182476800.

The previous prime is 612399731. The next prime is 612399769. The reversal of 612399744 is 447993216.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 612399744.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3383334 + ... + 3383514.

Almost surely, 2^612399744 is an apocalyptic number.

612399744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612399744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002456000).

612399744 is an abundant number, since it is smaller than the sum of its proper divisors (1392512256).

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

612399744 is a wasteful number, since it uses less digits than its factorization.

612399744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 286 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 612399744 is about 24746.7117815681. The cubic root of 612399744 is about 849.2032876086.

The spelling of 612399744 in words is "six hundred twelve million, three hundred ninety-nine thousand, seven hundred forty-four".