672217722 has 24 divisors (see below), whose sum is σ = 1588878720. Its totient is φ = 203702280.

The previous prime is 672217703. The next prime is 672217727. The reversal of 672217722 is 227712276.

It is not an unprimeable number, because it can be changed into a prime (672217727) 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 11 ways as a sum of consecutive naturals, for example, 1697322 + ... + 1697717.

It is an arithmetic number, because the mean of its divisors is an integer number (66203280).

Almost surely, 2^672217722 is an apocalyptic number.

672217722 is an abundant number, since it is smaller than the sum of its proper divisors (916660998).

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

672217722 is a wasteful number, since it uses less digits than its factorization.

672217722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395058 (or 3395055 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 672217722 is about 25927.1618577892. The cubic root of 672217722 is about 875.9984127700.

Adding to 672217722 its reverse (227712276), we get a palindrome (899929998).

The spelling of 672217722 in words is "six hundred seventy-two million, two hundred seventeen thousand, seven hundred twenty-two".