634698117 has 6 divisors (see below), whose sum is σ = 916786182. Its totient is φ = 423132072.

The previous prime is 634698109. The next prime is 634698137. The reversal of 634698117 is 711896436.

It is a happy number.

634698117 is a `hidden beast` number, since 634 + 6 + 9 + 8 + 1 + 1 + 7 = 666.

634698117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 605602881 + 29095236 = 24609^2 + 5394^2 .

It is not a de Polignac number, because 634698117 - 2³ = 634698109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634698137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35260998 + ... + 35261015.

It is an arithmetic number, because the mean of its divisors is an integer number (152797697).

Almost surely, 2^634698117 is an apocalyptic number.

It is an amenable number.

634698117 is a deficient number, since it is larger than the sum of its proper divisors (282088065).

634698117 is a wasteful number, since it uses less digits than its factorization.

634698117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70522019 (or 70522016 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 634698117 is about 25193.2156939125. The cubic root of 634698117 is about 859.3875741667.

The spelling of 634698117 in words is "six hundred thirty-four million, six hundred ninety-eight thousand, one hundred seventeen".