634720233 has 16 divisors (see below), whose sum is σ = 969065856. Its totient is φ = 361994880.

The previous prime is 634720231. The next prime is 634720241. The reversal of 634720233 is 332027436.

It is not a de Polignac number, because 634720233 - 2¹ = 634720231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634720233.

It is not an unprimeable number, because it can be changed into a prime (634720231) 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 15 ways as a sum of consecutive naturals, for example, 18066 + ... + 39947.

It is an arithmetic number, because the mean of its divisors is an integer number (60566616).

Almost surely, 2^634720233 is an apocalyptic number.

It is an amenable number.

634720233 is a deficient number, since it is larger than the sum of its proper divisors (334345623).

634720233 is a wasteful number, since it uses less digits than its factorization.

634720233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58544.

The product of its (nonzero) digits is 18144, while the sum is 30.

The square root of 634720233 is about 25193.6546177802. The cubic root of 634720233 is about 859.3975558122.

Adding to 634720233 its reverse (332027436), we get a palindrome (966747669).

The spelling of 634720233 in words is "six hundred thirty-four million, seven hundred twenty thousand, two hundred thirty-three".