632491 has 4 divisors (see below), whose sum is σ = 665800. Its totient is φ = 599184.

The previous prime is 632483. The next prime is 632497. The reversal of 632491 is 194236.

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

It is not a de Polignac number, because 632491 - 2³ = 632483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (632497) by changing a digit.

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, 16626 + ... + 16663.

It is an arithmetic number, because the mean of its divisors is an integer number (166450).

2⁶³²⁴⁹¹ is an apocalyptic number.

632491 is a deficient number, since it is larger than the sum of its proper divisors (33309).

632491 is a wasteful number, since it uses less digits than its factorization.

632491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33308.

The product of its digits is 1296, while the sum is 25.

The square root of 632491 is about 795.2930277577. The cubic root of 632491 is about 85.8390264445.

The spelling of 632491 in words is "six hundred thirty-two thousand, four hundred ninety-one".