673732731 has 8 divisors (see below), whose sum is σ = 1026640384. Its totient is φ = 384990120.

The previous prime is 673732693. The next prime is 673732747. The reversal of 673732731 is 137237376.

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

It is not a de Polignac number, because 673732731 - 2⁷ = 673732603 is a prime.

It is a super-2 number, since 2×673732731² = 907831585641436722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 673732731.

It is not an unprimeable number, because it can be changed into a prime (673732931) 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 7 ways as a sum of consecutive naturals, for example, 16041235 + ... + 16041276.

It is an arithmetic number, because the mean of its divisors is an integer number (128330048).

Almost surely, 2^673732731 is an apocalyptic number.

673732731 is a deficient number, since it is larger than the sum of its proper divisors (352907653).

673732731 is a wasteful number, since it uses less digits than its factorization.

673732731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32082521.

The product of its digits is 111132, while the sum is 39.

The square root of 673732731 is about 25956.3620524911. The cubic root of 673732731 is about 876.6560120693.

The spelling of 673732731 in words is "six hundred seventy-three million, seven hundred thirty-two thousand, seven hundred thirty-one".