632409 has 4 divisors (see below), whose sum is σ = 843216. Its totient is φ = 421604.

The previous prime is 632393. The next prime is 632447. The reversal of 632409 is 904236.

632409 is nontrivially palindromic in base 2.

632409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 632409 - 2⁴ = 632393 is a prime.

It is a super-2 number, since 2×632409² = 799882286562, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (632459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105399 + ... + 105404.

It is an arithmetic number, because the mean of its divisors is an integer number (210804).

2⁶³²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

632409 is a deficient number, since it is larger than the sum of its proper divisors (210807).

632409 is a wasteful number, since it uses less digits than its factorization.

632409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210806.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 632409 is about 795.2414727616. The cubic root of 632409 is about 85.8353167188.

The spelling of 632409 in words is "six hundred thirty-two thousand, four hundred nine".