731074745 has 8 divisors (see below), whose sum is σ = 877446600. Its totient is φ = 584755200.

The previous prime is 731074727. The next prime is 731074753. The reversal of 731074745 is 547470137.

731074745 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 454883584 + 276191161 = 21328^2 + 16619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 731074745 - 2⁸ = 731074489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 731074699 and 731074708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31481 + ... + 49529.

It is an arithmetic number, because the mean of its divisors is an integer number (109680825).

Almost surely, 2^731074745 is an apocalyptic number.

It is an amenable number.

731074745 is a deficient number, since it is larger than the sum of its proper divisors (146371855).

731074745 is a wasteful number, since it uses less digits than its factorization.

731074745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26155.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 731074745 is about 27038.3939057038. The cubic root of 731074745 is about 900.8529958248.

The spelling of 731074745 in words is "seven hundred thirty-one million, seventy-four thousand, seven hundred forty-five".