634875663 has 4 divisors (see below), whose sum is σ = 846500888. Its totient is φ = 423250440.

The previous prime is 634875653. The next prime is 634875677. The reversal of 634875663 is 366578436.

It is a happy number.

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

It is not a de Polignac number, because 634875663 - 2⁶ = 634875599 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 (634875613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105812608 + ... + 105812613.

It is an arithmetic number, because the mean of its divisors is an integer number (211625222).

Almost surely, 2^634875663 is an apocalyptic number.

634875663 is a deficient number, since it is larger than the sum of its proper divisors (211625225).

634875663 is a wasteful number, since it uses less digits than its factorization.

634875663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211625224.

The product of its digits is 2177280, while the sum is 48.

The square root of 634875663 is about 25196.7391342610. The cubic root of 634875663 is about 859.4676997135.

The spelling of 634875663 in words is "six hundred thirty-four million, eight hundred seventy-five thousand, six hundred sixty-three".