632621393 has 2 divisors, whose sum is σ = 632621394. Its totient is φ = 632621392.

The previous prime is 632621299. The next prime is 632621411. The reversal of 632621393 is 393126236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559227904 + 73393489 = 23648^2 + 8567^2 .

It is a cyclic number.

It is not a de Polignac number, because 632621393 - 2⁸ = 632621137 is a prime.

It is not a weakly prime, because it can be changed into another prime (632621593) 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 as a sum of consecutive naturals, namely, 316310696 + 316310697.

It is an arithmetic number, because the mean of its divisors is an integer number (316310697).

Almost surely, 2^632621393 is an apocalyptic number.

It is an amenable number.

632621393 is a deficient number, since it is larger than the sum of its proper divisors (1).

632621393 is an equidigital number, since it uses as much as digits as its factorization.

632621393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 35.

The square root of 632621393 is about 25151.9659867773. The cubic root of 632621393 is about 858.4492483623.

The spelling of 632621393 in words is "six hundred thirty-two million, six hundred twenty-one thousand, three hundred ninety-three".