672912073 has 4 divisors (see below), whose sum is σ = 672963988. Its totient is φ = 672860160.

The previous prime is 672912059. The next prime is 672912083. The reversal of 672912073 is 370219276.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 276623424 + 396288649 = 16632^2 + 19907^2 .

It is a cyclic number.

It is not a de Polignac number, because 672912073 - 2⁵ = 672912041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672912013) 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, 11593 + ... + 38473.

It is an arithmetic number, because the mean of its divisors is an integer number (168240997).

Almost surely, 2^672912073 is an apocalyptic number.

It is an amenable number.

672912073 is a deficient number, since it is larger than the sum of its proper divisors (51915).

672912073 is a wasteful number, since it uses less digits than its factorization.

672912073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51914.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 672912073 is about 25940.5488184040. The cubic root of 672912073 is about 876.2999227562.

The spelling of 672912073 in words is "six hundred seventy-two million, nine hundred twelve thousand, seventy-three".