672217412 has 12 divisors (see below), whose sum is σ = 1227527616. Its totient is φ = 321495240.

The previous prime is 672217411. The next prime is 672217457. The reversal of 672217412 is 214712276.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (672217411) 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, 3653264 + ... + 3653447.

It is an arithmetic number, because the mean of its divisors is an integer number (102293968).

Almost surely, 2^672217412 is an apocalyptic number.

It is an amenable number.

672217412 is a deficient number, since it is larger than the sum of its proper divisors (555310204).

672217412 is a wasteful number, since it uses less digits than its factorization.

672217412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306738 (or 7306736 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 672217412 is about 25927.1558795021. The cubic root of 672217412 is about 875.9982781115.

Adding to 672217412 its reverse (214712276), we get a palindrome (886929688).

The spelling of 672217412 in words is "six hundred seventy-two million, two hundred seventeen thousand, four hundred twelve".