632421 has 16 divisors (see below), whose sum is σ = 955200. Its totient is φ = 413424.

The previous prime is 632393. The next prime is 632447. The reversal of 632421 is 124236.

It is a happy number.

632421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 632421 - 2⁵ = 632389 is a prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 632394 and 632403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (59700).

2⁶³²⁴²¹ is an apocalyptic number.

It is an amenable number.

632421 is a deficient number, since it is larger than the sum of its proper divisors (322779).

632421 is a wasteful number, since it uses less digits than its factorization.

632421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 632421 is about 795.2490176039. The cubic root of 632421 is about 85.8358596255.

Adding to 632421 its reverse (124236), we get a palindrome (756657).

The spelling of 632421 in words is "six hundred thirty-two thousand, four hundred twenty-one".