745066656 has 72 divisors (see below), whose sum is σ = 2125727604. Its totient is φ = 247541760.

The previous prime is 745066649. The next prime is 745066661. The reversal of 745066656 is 656660547.

It can be written as a sum of positive squares in 2 ways, for example, as 662547600 + 82519056 = 25740^2 + 9084^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 87216 + ... + 95376.

Almost surely, 2^745066656 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 745066656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062863802).

745066656 is an abundant number, since it is smaller than the sum of its proper divisors (1380660948).

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

745066656 is a wasteful number, since it uses less digits than its factorization.

745066656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8494 (or 8483 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The square root of 745066656 is about 27295.9091440457. The cubic root of 745066656 is about 906.5638056127.

The spelling of 745066656 in words is "seven hundred forty-five million, sixty-six thousand, six hundred fifty-six".