745999969 has 27 divisors (see below), whose sum is σ = 892584147. Its totient is φ = 622736400.

The previous prime is 745999889. The next prime is 745999987. The reversal of 745999969 is 969999547.

The square root of 745999969 is 27313.

It is a perfect power (a square), and thus also a powerful number.

745999969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 110355025 + 635644944 = 10505^2 + 25212^2 .

It is not a de Polignac number, because 745999969 - 2¹¹ = 745997921 is a prime.

It is a super-2 number, since 2×745999969² = 1113031907496001922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745999999) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3905664 + ... + 3905854.

Almost surely, 2^745999969 is an apocalyptic number.

745999969 is the 27313-rd square number.

745999969 is the 13657-th centered octagonal number.

It is an amenable number.

745999969 is a deficient number, since it is larger than the sum of its proper divisors (146584178).

745999969 is a wasteful number, since it uses less digits than its factorization.

745999969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 215 counting only the distinct ones).

The product of its digits is 49601160, while the sum is 67.

The cubic root of 745999969 is about 906.9421855110.

The spelling of 745999969 in words is "seven hundred forty-five million, nine hundred ninety-nine thousand, nine hundred sixty-nine".