634490107 has 4 divisors (see below), whose sum is σ = 635860960. Its totient is φ = 633119256.

The previous prime is 634490063. The next prime is 634490119. The reversal of 634490107 is 701094436.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634490107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634490137) 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 3 ways as a sum of consecutive naturals, for example, 684732 + ... + 685657.

It is an arithmetic number, because the mean of its divisors is an integer number (158965240).

Almost surely, 2^634490107 is an apocalyptic number.

634490107 is a deficient number, since it is larger than the sum of its proper divisors (1370853).

634490107 is a wasteful number, since it uses less digits than its factorization.

634490107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370852.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 634490107 is about 25189.0870616622. The cubic root of 634490107 is about 859.2936813712.

The spelling of 634490107 in words is "six hundred thirty-four million, four hundred ninety thousand, one hundred seven".