672138303 has 8 divisors (see below), whose sum is σ = 902726448. Its totient is φ = 444821184.

The previous prime is 672138293. The next prime is 672138323. The reversal of 672138303 is 303831276.

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

It is not a de Polignac number, because 672138303 - 2⁶ = 672138239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672138323) 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, 817276 + ... + 818097.

It is an arithmetic number, because the mean of its divisors is an integer number (112840806).

Almost surely, 2^672138303 is an apocalyptic number.

672138303 is a deficient number, since it is larger than the sum of its proper divisors (230588145).

672138303 is a wasteful number, since it uses less digits than its factorization.

672138303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635513.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 672138303 is about 25925.6302334196. The cubic root of 672138303 is about 875.9639132045.

Adding to 672138303 its reverse (303831276), we get a palindrome (975969579).

The spelling of 672138303 in words is "six hundred seventy-two million, one hundred thirty-eight thousand, three hundred three".