634822 has 4 divisors (see below), whose sum is σ = 952236. Its totient is φ = 317410.

The previous prime is 634817. The next prime is 634841. The reversal of 634822 is 228436.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

634822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158704 + ... + 158707.

It is an arithmetic number, because the mean of its divisors is an integer number (238059).

2⁶³⁴⁸²² is an apocalyptic number.

634822 is a deficient number, since it is larger than the sum of its proper divisors (317414).

634822 is a wasteful number, since it uses less digits than its factorization.

634822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317413.

The product of its digits is 2304, while the sum is 25.

The square root of 634822 is about 796.7571775642. The cubic root of 634822 is about 85.9443483468.

It can be divided in two parts, 6348 and 22, that multiplied together give a triangular number (139656 = T₅₂₈).

The spelling of 634822 in words is "six hundred thirty-four thousand, eight hundred twenty-two".