745570944 has 192 divisors, whose sum is σ = 2358158400. Its totient is φ = 225054720.

The previous prime is 745570939. The next prime is 745570951. The reversal of 745570944 is 449075547.

745570944 is a `hidden beast` number, since 7 + 4 + 557 + 0 + 94 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-3 number, since 3×745570944³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 745570944.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 502684 + ... + 504164.

It is an arithmetic number, because the mean of its divisors is an integer number (12282075).

Almost surely, 2^745570944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745570944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179079200).

745570944 is an abundant number, since it is smaller than the sum of its proper divisors (1612587456).

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

745570944 is a wasteful number, since it uses less digits than its factorization.

745570944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1543 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 745570944 is about 27305.1450096864. The cubic root of 745570944 is about 906.7682911848.

The spelling of 745570944 in words is "seven hundred forty-five million, five hundred seventy thousand, nine hundred forty-four".