634350253 has 4 divisors (see below), whose sum is σ = 635047488. Its totient is φ = 633653020.

The previous prime is 634350251. The next prime is 634350271. The reversal of 634350253 is 352053436.

It is a happy number.

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 634350253 - 2¹ = 634350251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634350251) 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, 347251 + ... + 349072.

It is an arithmetic number, because the mean of its divisors is an integer number (158761872).

Almost surely, 2^634350253 is an apocalyptic number.

It is an amenable number.

634350253 is a deficient number, since it is larger than the sum of its proper divisors (697235).

634350253 is an equidigital number, since it uses as much as digits as its factorization.

634350253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697234.

The product of its (nonzero) digits is 32400, while the sum is 31.

The square root of 634350253 is about 25186.3108255258. The cubic root of 634350253 is about 859.2305417005.

The spelling of 634350253 in words is "six hundred thirty-four million, three hundred fifty thousand, two hundred fifty-three".