673687357 has 4 divisors (see below), whose sum is σ = 769928416. Its totient is φ = 577446300.

The previous prime is 673687349. The next prime is 673687393. The reversal of 673687357 is 753786376.

It is a happy number.

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 673687357 - 2³ = 673687349 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 (673687397) 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, 48120519 + ... + 48120532.

It is an arithmetic number, because the mean of its divisors is an integer number (192482104).

Almost surely, 2^673687357 is an apocalyptic number.

It is an amenable number.

673687357 is a deficient number, since it is larger than the sum of its proper divisors (96241059).

673687357 is an equidigital number, since it uses as much as digits as its factorization.

673687357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96241058.

The product of its digits is 4445280, while the sum is 52.

The square root of 673687357 is about 25955.4879938714. The cubic root of 673687357 is about 876.6363315239.

The spelling of 673687357 in words is "six hundred seventy-three million, six hundred eighty-seven thousand, three hundred fifty-seven".