745472709 has 6 divisors (see below), whose sum is σ = 1076793926. Its totient is φ = 496981800.

The previous prime is 745472681. The next prime is 745472713. The reversal of 745472709 is 907274547.

It can be written as a sum of positive squares in only one way, i.e., 445421025 + 300051684 = 21105^2 + 17322^2 .

It is not a de Polignac number, because 745472709 - 2¹² = 745468613 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745472789) 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, 41415142 + ... + 41415159.

Almost surely, 2^745472709 is an apocalyptic number.

It is an amenable number.

745472709 is a deficient number, since it is larger than the sum of its proper divisors (331321217).

745472709 is a wasteful number, since it uses less digits than its factorization.

745472709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82830307 (or 82830304 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

The square root of 745472709 is about 27303.3461136176. The cubic root of 745472709 is about 906.7284647510.

The spelling of 745472709 in words is "seven hundred forty-five million, four hundred seventy-two thousand, seven hundred nine".