672410221 has 16 divisors (see below), whose sum is σ = 820537344. Its totient is φ = 538466544.

The previous prime is 672410203. The next prime is 672410237. The reversal of 672410221 is 122014276.

It is not a de Polignac number, because 672410221 - 2⁹ = 672409709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672410201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41641 + ... + 55486.

It is an arithmetic number, because the mean of its divisors is an integer number (51283584).

Almost surely, 2^672410221 is an apocalyptic number.

It is an amenable number.

672410221 is a deficient number, since it is larger than the sum of its proper divisors (148127123).

672410221 is a wasteful number, since it uses less digits than its factorization.

672410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97200.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 672410221 is about 25930.8738958023. The cubic root of 672410221 is about 876.0820229452.

Adding to 672410221 its reverse (122014276), we get a palindrome (794424497).

The spelling of 672410221 in words is "six hundred seventy-two million, four hundred ten thousand, two hundred twenty-one".