634827253 has 4 divisors (see below), whose sum is σ = 636001228. Its totient is φ = 633653280.

The previous prime is 634827233. The next prime is 634827283. The reversal of 634827253 is 352728436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 97653924 + 537173329 = 9882^2 + 23177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634827253 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 (634827203) 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, 586176 + ... + 587257.

It is an arithmetic number, because the mean of its divisors is an integer number (159000307).

Almost surely, 2^634827253 is an apocalyptic number.

It is an amenable number.

634827253 is a deficient number, since it is larger than the sum of its proper divisors (1173975).

634827253 is a wasteful number, since it uses less digits than its factorization.

634827253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173974.

The product of its digits is 241920, while the sum is 40.

The square root of 634827253 is about 25195.7784757685. The cubic root of 634827253 is about 859.4458540245.

The spelling of 634827253 in words is "six hundred thirty-four million, eight hundred twenty-seven thousand, two hundred fifty-three".