632657213 has 2 divisors, whose sum is σ = 632657214. Its totient is φ = 632657212.

The previous prime is 632657203. The next prime is 632657239. The reversal of 632657213 is 312756236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627101764 + 5555449 = 25042^2 + 2357^2 .

It is a cyclic number.

It is not a de Polignac number, because 632657213 - 2⁶ = 632657149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (632657203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316328606 + 316328607.

It is an arithmetic number, because the mean of its divisors is an integer number (316328607).

Almost surely, 2^632657213 is an apocalyptic number.

It is an amenable number.

632657213 is a deficient number, since it is larger than the sum of its proper divisors (1).

632657213 is an equidigital number, since it uses as much as digits as its factorization.

632657213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 632657213 is about 25152.6780482715. The cubic root of 632657213 is about 858.4654502971.

The spelling of 632657213 in words is "six hundred thirty-two million, six hundred fifty-seven thousand, two hundred thirteen".