634633 has 4 divisors (see below), whose sum is σ = 636228. Its totient is φ = 633040.

The previous prime is 634609. The next prime is 634643. The reversal of 634633 is 336436.

634633 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 97344 + 537289 = 312^2 + 733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634598 and 634607.

It is not an unprimeable number, because it can be changed into a prime (634603) 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, 363 + ... + 1183.

It is an arithmetic number, because the mean of its divisors is an integer number (159057).

2⁶³⁴⁶³³ is an apocalyptic number.

It is an amenable number.

634633 is a deficient number, since it is larger than the sum of its proper divisors (1595).

634633 is an equidigital number, since it uses as much as digits as its factorization.

634633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594.

The product of its digits is 3888, while the sum is 25.

The square root of 634633 is about 796.6385629632. The cubic root of 634633 is about 85.9358183473.

The spelling of 634633 in words is "six hundred thirty-four thousand, six hundred thirty-three".