633121 has 4 divisors (see below), whose sum is σ = 660672. Its totient is φ = 605572.

The previous prime is 633091. The next prime is 633133. The reversal of 633121 is 121336.

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 633121 - 2⁷ = 632993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 633095 and 633104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633151) 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, 13741 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (165168).

2⁶³³¹²¹ is an apocalyptic number.

It is an amenable number.

633121 is a deficient number, since it is larger than the sum of its proper divisors (27551).

633121 is a wasteful number, since it uses less digits than its factorization.

633121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27550.

The product of its digits is 108, while the sum is 16.

The square root of 633121 is about 795.6890096011. The cubic root of 633121 is about 85.8675173065.

Adding to 633121 its reverse (121336), we get a palindrome (754457).

The spelling of 633121 in words is "six hundred thirty-three thousand, one hundred twenty-one".