634884937 has 4 divisors (see below), whose sum is σ = 637144596. Its totient is φ = 632625280.

The previous prime is 634884919. The next prime is 634885003. The reversal of 634884937 is 739488436.

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 508457401 + 126427536 = 22549^2 + 11244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634884937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634884137) 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, 1129408 + ... + 1129969.

It is an arithmetic number, because the mean of its divisors is an integer number (159286149).

Almost surely, 2^634884937 is an apocalyptic number.

It is an amenable number.

634884937 is a deficient number, since it is larger than the sum of its proper divisors (2259659).

634884937 is a wasteful number, since it uses less digits than its factorization.

634884937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259658.

The product of its digits is 3483648, while the sum is 52.

The square root of 634884937 is about 25196.9231653391. The cubic root of 634884937 is about 859.4718846089.

The spelling of 634884937 in words is "six hundred thirty-four million, eight hundred eighty-four thousand, nine hundred thirty-seven".