632540 has 12 divisors (see below), whose sum is σ = 1328376. Its totient is φ = 253008.

The previous prime is 632521. The next prime is 632557. The reversal of 632540 is 45236.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 31627 = 632540 / (6 + 3 + 2 + 5 + 4 + 0).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 632540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15794 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (110698).

2⁶³²⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

632540 is an abundant number, since it is smaller than the sum of its proper divisors (695836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

632540 is a wasteful number, since it uses less digits than its factorization.

632540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31636 (or 31634 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 632540 is about 795.3238334163. The cubic root of 632540 is about 85.8412430787.

Adding to 632540 its reverse (45236), we get a palindrome (677776).

The spelling of 632540 in words is "six hundred thirty-two thousand, five hundred forty".