731475745 has 64 divisors (see below), whose sum is σ = 1248016896. Its totient is φ = 396103680.

The previous prime is 731475733. The next prime is 731475749. The reversal of 731475745 is 547574137.

It is a happy number.

It is not a de Polignac number, because 731475745 - 2¹⁵ = 731442977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (731475749) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80787 + ... + 89383.

It is an arithmetic number, because the mean of its divisors is an integer number (19500264).

Almost surely, 2^731475745 is an apocalyptic number.

It is an amenable number.

731475745 is a deficient number, since it is larger than the sum of its proper divisors (516541151).

731475745 is a wasteful number, since it uses less digits than its factorization.

731475745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8650.

The product of its digits is 411600, while the sum is 43.

The square root of 731475745 is about 27045.8082704141. The cubic root of 731475745 is about 901.0176739356.

The spelling of 731475745 in words is "seven hundred thirty-one million, four hundred seventy-five thousand, seven hundred forty-five".