672721110 has 48 divisors (see below), whose sum is σ = 1851965856. Its totient is φ = 168839424.

The previous prime is 672721109. The next prime is 672721117. The reversal of 672721110 is 11127276.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672721117) 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 23 ways as a sum of consecutive naturals, for example, 218314 + ... + 221373.

It is an arithmetic number, because the mean of its divisors is an integer number (38582622).

Almost surely, 2^672721110 is an apocalyptic number.

672721110 is an abundant number, since it is smaller than the sum of its proper divisors (1179244746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672721110 is a wasteful number, since it uses less digits than its factorization.

672721110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439717 (or 439714 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 672721110 is about 25936.8677754273. The cubic root of 672721110 is about 876.2170210414.

Adding to 672721110 its reverse (11127276), we get a palindrome (683848386).

The spelling of 672721110 in words is "six hundred seventy-two million, seven hundred twenty-one thousand, one hundred ten".