632423641 has 2 divisors, whose sum is σ = 632423642. Its totient is φ = 632423640.

The previous prime is 632423633. The next prime is 632423669. The reversal of 632423641 is 146324236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448550041 + 183873600 = 21179^2 + 13560^2 .

It is a cyclic number.

It is not a de Polignac number, because 632423641 - 2³ = 632423633 is a prime.

It is not a weakly prime, because it can be changed into another prime (632423611) 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, 316211820 + 316211821.

It is an arithmetic number, because the mean of its divisors is an integer number (316211821).

Almost surely, 2^632423641 is an apocalyptic number.

It is an amenable number.

632423641 is a deficient number, since it is larger than the sum of its proper divisors (1).

632423641 is an equidigital number, since it uses as much as digits as its factorization.

632423641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 632423641 is about 25148.0345355258. The cubic root of 632423641 is about 858.3597910928.

Adding to 632423641 its reverse (146324236), we get a palindrome (778747877).

The spelling of 632423641 in words is "six hundred thirty-two million, four hundred twenty-three thousand, six hundred forty-one".