672813823 has 8 divisors (see below), whose sum is σ = 741247056. Its totient is φ = 605592000.

The previous prime is 672813803. The next prime is 672813839. The reversal of 672813823 is 328318276.

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

It is a cyclic number.

It is not a de Polignac number, because 672813823 - 2¹³ = 672805631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672813803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301686 + ... + 303907.

It is an arithmetic number, because the mean of its divisors is an integer number (92655882).

Almost surely, 2^672813823 is an apocalyptic number.

672813823 is a deficient number, since it is larger than the sum of its proper divisors (68433233).

672813823 is a wasteful number, since it uses less digits than its factorization.

672813823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605705.

The product of its digits is 96768, while the sum is 40.

The square root of 672813823 is about 25938.6549959708. The cubic root of 672813823 is about 876.2572719843.

The spelling of 672813823 in words is "six hundred seventy-two million, eight hundred thirteen thousand, eight hundred twenty-three".