745844564 has 24 divisors (see below), whose sum is σ = 1322493480. Its totient is φ = 368006144.

The previous prime is 745844537. The next prime is 745844581. The reversal of 745844564 is 465448547.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 145202500 + 600642064 = 12050^2 + 24508^2 .

It is a super-2 number, since 2×745844564² = 1112568227296700192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209342 + ... + 212874.

It is an arithmetic number, because the mean of its divisors is an integer number (55103895).

Almost surely, 2^745844564 is an apocalyptic number.

It is an amenable number.

745844564 is a deficient number, since it is larger than the sum of its proper divisors (576648916).

745844564 is a wasteful number, since it uses less digits than its factorization.

745844564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219 (or 4217 counting only the distinct ones).

The product of its digits is 2150400, while the sum is 47.

The square root of 745844564 is about 27310.1549611129. The cubic root of 745844564 is about 906.8792037664.

The spelling of 745844564 in words is "seven hundred forty-five million, eight hundred forty-four thousand, five hundred sixty-four".