632479221 has 48 divisors (see below), whose sum is σ = 1032752448. Its totient is φ = 372699360.

The previous prime is 632479213. The next prime is 632479229. The reversal of 632479221 is 122974236.

It is an interprime number because it is at equal distance from previous prime (632479213) and next prime (632479229).

It is not a de Polignac number, because 632479221 - 2³ = 632479213 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632479229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 442510 + ... + 443936.

It is an arithmetic number, because the mean of its divisors is an integer number (21515676).

Almost surely, 2^632479221 is an apocalyptic number.

It is an amenable number.

632479221 is a deficient number, since it is larger than the sum of its proper divisors (400273227).

632479221 is a wasteful number, since it uses less digits than its factorization.

632479221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1478 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 632479221 is about 25149.1395677864. The cubic root of 632479221 is about 858.3849357567.

The spelling of 632479221 in words is "six hundred thirty-two million, four hundred seventy-nine thousand, two hundred twenty-one".