672723919 has 4 divisors (see below), whose sum is σ = 768827344. Its totient is φ = 576620496.

The previous prime is 672723913. The next prime is 672723923. The reversal of 672723919 is 919327276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672723919 - 2⁷ = 672723791 is a prime.

It is a super-3 number, since 3×672723919³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672723913) 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, 48051702 + ... + 48051715.

It is an arithmetic number, because the mean of its divisors is an integer number (192206836).

Almost surely, 2^672723919 is an apocalyptic number.

672723919 is a deficient number, since it is larger than the sum of its proper divisors (96103425).

672723919 is an equidigital number, since it uses as much as digits as its factorization.

672723919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96103424.

The product of its digits is 285768, while the sum is 46.

The square root of 672723919 is about 25936.9219260883. The cubic root of 672723919 is about 876.2182406107.

The spelling of 672723919 in words is "six hundred seventy-two million, seven hundred twenty-three thousand, nine hundred nineteen".