634279 has 2 divisors, whose sum is σ = 634280. Its totient is φ = 634278.

The previous prime is 634273. The next prime is 634301. The reversal of 634279 is 972436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634279 - 2⁵ = 634247 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317139 + 317140.

It is an arithmetic number, because the mean of its divisors is an integer number (317140).

2⁶³⁴²⁷⁹ is an apocalyptic number.

634279 is a deficient number, since it is larger than the sum of its proper divisors (1).

634279 is an equidigital number, since it uses as much as digits as its factorization.

634279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 634279 is about 796.4163484008. The cubic root of 634279 is about 85.9198369649.

It can be divided in two parts, 63427 and 9, that added together give a palindrome (63436).

The spelling of 634279 in words is "six hundred thirty-four thousand, two hundred seventy-nine".