731739073 has 6 divisors (see below), whose sum is σ = 792356694. Its totient is φ = 675451296.

The previous prime is 731739067. The next prime is 731739101. The reversal of 731739073 is 370937137.

It can be written as a sum of positive squares in 3 ways, for example, as 45927729 + 685811344 = 6777^2 + 26188^2 .

It is a de Polignac number, because none of the positive numbers 2^k-731739073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (731739473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2164740 + ... + 2165077.

It is an arithmetic number, because the mean of its divisors is an integer number (132059449).

Almost surely, 2^731739073 is an apocalyptic number.

It is an amenable number.

731739073 is a deficient number, since it is larger than the sum of its proper divisors (60617621).

731739073 is a wasteful number, since it uses less digits than its factorization.

731739073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329843 (or 4329830 counting only the distinct ones).

The product of its (nonzero) digits is 83349, while the sum is 40.

The square root of 731739073 is about 27050.6760174307. The cubic root of 731739073 is about 901.1257817428.

The spelling of 731739073 in words is "seven hundred thirty-one million, seven hundred thirty-nine thousand, seventy-three".