731316644 has 12 divisors (see below), whose sum is σ = 1281031500. Its totient is φ = 365307648.

The previous prime is 731316637. The next prime is 731316647. The reversal of 731316644 is 446613137.

It can be written as a sum of positive squares in 2 ways, for example, as 701614144 + 29702500 = 26488^2 + 5450^2 .

It is not an unprimeable number, because it can be changed into a prime (731316647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82949 + ... + 91340.

It is an arithmetic number, because the mean of its divisors is an integer number (106752625).

Almost surely, 2^731316644 is an apocalyptic number.

It is an amenable number.

731316644 is a deficient number, since it is larger than the sum of its proper divisors (549714856).

731316644 is a wasteful number, since it uses less digits than its factorization.

731316644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175342 (or 175340 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 731316644 is about 27042.8667859012. The cubic root of 731316644 is about 900.9523433539.

The spelling of 731316644 in words is "seven hundred thirty-one million, three hundred sixteen thousand, six hundred forty-four".