745394688 has 60 divisors (see below), whose sum is σ = 2151272838. Its totient is φ = 248463360.

The previous prime is 745394687. The next prime is 745394693. The reversal of 745394688 is 886493547.

It can be written as a sum of positive squares in only one way, i.e., 644753664 + 100641024 = 25392^2 + 10032^2 .

It is a super-2 number, since 2×745394688² = 1111226481797234688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745394687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76273 + ... + 85488.

Almost surely, 2^745394688 is an apocalyptic number.

It is an amenable number.

745394688 is an abundant number, since it is smaller than the sum of its proper divisors (1405878150).

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

745394688 is a wasteful number, since it uses less digits than its factorization.

745394688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161785 (or 161766 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 745394688 is about 27301.9172953110. The cubic root of 745394688 is about 906.6968309841.

The spelling of 745394688 in words is "seven hundred forty-five million, three hundred ninety-four thousand, six hundred eighty-eight".