634357253 has 8 divisors (see below), whose sum is σ = 645024768. Its totient is φ = 623778624.

The previous prime is 634357249. The next prime is 634357279. The reversal of 634357253 is 352753436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634357253 - 2² = 634357249 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 (634357553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7751 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (80628096).

Almost surely, 2^634357253 is an apocalyptic number.

It is an amenable number.

634357253 is a deficient number, since it is larger than the sum of its proper divisors (10667515).

634357253 is a wasteful number, since it uses less digits than its factorization.

634357253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44443.

The product of its digits is 226800, while the sum is 38.

The square root of 634357253 is about 25186.4497895198. The cubic root of 634357253 is about 859.2337022004.

The spelling of 634357253 in words is "six hundred thirty-four million, three hundred fifty-seven thousand, two hundred fifty-three".