731673613 has 4 divisors (see below), whose sum is σ = 798189408. Its totient is φ = 665157820.

The previous prime is 731673559. The next prime is 731673629. The reversal of 731673613 is 316376137.

731673613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 731673613 - 2²⁵ = 698119181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731673653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33257881 + ... + 33257902.

It is an arithmetic number, because the mean of its divisors is an integer number (199547352).

Almost surely, 2^731673613 is an apocalyptic number.

It is an amenable number.

731673613 is a deficient number, since it is larger than the sum of its proper divisors (66515795).

731673613 is a wasteful number, since it uses less digits than its factorization.

731673613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66515794.

The product of its digits is 47628, while the sum is 37.

The square root of 731673613 is about 27049.4660390922. The cubic root of 731673613 is about 901.0989099361.

The spelling of 731673613 in words is "seven hundred thirty-one million, six hundred seventy-three thousand, six hundred thirteen".