745110644 has 12 divisors (see below), whose sum is σ = 1306357668. Its totient is φ = 371865600.

The previous prime is 745110607. The next prime is 745110649. The reversal of 745110644 is 446011547.

It can be written as a sum of positive squares in 2 ways, for example, as 509856400 + 235254244 = 22580^2 + 15338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 745110644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745110649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169997 + ... + 174324.

It is an arithmetic number, because the mean of its divisors is an integer number (108863139).

Almost surely, 2^745110644 is an apocalyptic number.

It is an amenable number.

745110644 is a deficient number, since it is larger than the sum of its proper divisors (561247024).

745110644 is a wasteful number, since it uses less digits than its factorization.

745110644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344866 (or 344864 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 745110644 is about 27296.7148939208. The cubic root of 745110644 is about 906.5816461390.

The spelling of 745110644 in words is "seven hundred forty-five million, one hundred ten thousand, six hundred forty-four".