672308813 has 8 divisors (see below), whose sum is σ = 733938240. Its totient is φ = 610764480.

The previous prime is 672308797. The next prime is 672308893. The reversal of 672308813 is 318803276.

It is a happy number.

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 672308813 - 2⁴ = 672308797 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 (672308893) 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, 4145 + ... + 36902.

It is an arithmetic number, because the mean of its divisors is an integer number (91742280).

Almost surely, 2^672308813 is an apocalyptic number.

It is an amenable number.

672308813 is a deficient number, since it is larger than the sum of its proper divisors (61629427).

672308813 is a wasteful number, since it uses less digits than its factorization.

672308813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42547.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 672308813 is about 25928.9184695390. The cubic root of 672308813 is about 876.0379792997.

The spelling of 672308813 in words is "six hundred seventy-two million, three hundred eight thousand, eight hundred thirteen".