633481 has 4 divisors (see below), whose sum is σ = 637200. Its totient is φ = 629764.

The previous prime is 633473. The next prime is 633487. The reversal of 633481 is 184336.

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 633481 - 2³ = 633473 is a prime.

It is a super-2 number, since 2×633481² = 802596354722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (633487) 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, 1591 + ... + 1948.

It is an arithmetic number, because the mean of its divisors is an integer number (159300).

2⁶³³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

633481 is a deficient number, since it is larger than the sum of its proper divisors (3719).

633481 is a wasteful number, since it uses less digits than its factorization.

633481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718.

The product of its digits is 1728, while the sum is 25.

The square root of 633481 is about 795.9151964877. The cubic root of 633481 is about 85.8837893140.

Adding to 633481 its product of digits (1728), we get a square (635209 = 797²).

The spelling of 633481 in words is "six hundred thirty-three thousand, four hundred eighty-one".