634637914 has 16 divisors (see below), whose sum is σ = 1042713000. Its totient is φ = 288354304.

The previous prime is 634637911. The next prime is 634637951. The reversal of 634637914 is 419736436.

It can be written as a sum of positive squares in 4 ways, for example, as 617274025 + 17363889 = 24845^2 + 4167^2 .

It is not an unprimeable number, because it can be changed into a prime (634637911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320839 + ... + 322810.

Almost surely, 2^634637914 is an apocalyptic number.

634637914 is a deficient number, since it is larger than the sum of its proper divisors (408075086).

634637914 is a wasteful number, since it uses less digits than its factorization.

634637914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643697.

The product of its digits is 326592, while the sum is 43.

The square root of 634637914 is about 25192.0208399406. The cubic root of 634637914 is about 859.3604014869.

The spelling of 634637914 in words is "six hundred thirty-four million, six hundred thirty-seven thousand, nine hundred fourteen".