672424213 has 2 divisors, whose sum is σ = 672424214. Its totient is φ = 672424212.

The previous prime is 672424211. The next prime is 672424217. The reversal of 672424213 is 312424276.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 650913169 + 21511044 = 25513^2 + 4638^2 .

It is a cyclic number.

It is not a de Polignac number, because 672424213 - 2¹ = 672424211 is a prime.

Together with 672424211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672424211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336212106 + 336212107.

It is an arithmetic number, because the mean of its divisors is an integer number (336212107).

Almost surely, 2^672424213 is an apocalyptic number.

It is an amenable number.

672424213 is a deficient number, since it is larger than the sum of its proper divisors (1).

672424213 is an equidigital number, since it uses as much as digits as its factorization.

672424213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 672424213 is about 25931.1436886228. The cubic root of 672424213 is about 876.0880996200.

Adding to 672424213 its reverse (312424276), we get a palindrome (984848489).

The spelling of 672424213 in words is "six hundred seventy-two million, four hundred twenty-four thousand, two hundred thirteen".