634788782 has 4 divisors (see below), whose sum is σ = 952183176. Its totient is φ = 317394390.

The previous prime is 634788769. The next prime is 634788787. The reversal of 634788782 is 287887436.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634788787) 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 as a sum of consecutive naturals, namely, 158697194 + ... + 158697197.

It is an arithmetic number, because the mean of its divisors is an integer number (238045794).

Almost surely, 2^634788782 is an apocalyptic number.

634788782 is a deficient number, since it is larger than the sum of its proper divisors (317394394).

634788782 is a wasteful number, since it uses less digits than its factorization.

634788782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317394393.

The product of its digits is 3612672, while the sum is 53.

The square root of 634788782 is about 25195.0150228175. The cubic root of 634788782 is about 859.4284926561.

The spelling of 634788782 in words is "six hundred thirty-four million, seven hundred eighty-eight thousand, seven hundred eighty-two".