632423651 has 4 divisors (see below), whose sum is σ = 633192912. Its totient is φ = 631654392.

The previous prime is 632423641. The next prime is 632423669. The reversal of 632423651 is 156324236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-632423651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a 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 in 3 ways as a sum of consecutive naturals, for example, 383396 + ... + 385041.

It is an arithmetic number, because the mean of its divisors is an integer number (158298228).

Almost surely, 2^632423651 is an apocalyptic number.

632423651 is a deficient number, since it is larger than the sum of its proper divisors (769261).

632423651 is an equidigital number, since it uses as much as digits as its factorization.

632423651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769260.

The product of its digits is 25920, while the sum is 32.

The square root of 632423651 is about 25148.0347343485. The cubic root of 632423651 is about 858.3597956170.

Adding to 632423651 its reverse (156324236), we get a palindrome (788747887).

The spelling of 632423651 in words is "six hundred thirty-two million, four hundred twenty-three thousand, six hundred fifty-one".