634865345 has 4 divisors (see below), whose sum is σ = 761838420. Its totient is φ = 507892272.

The previous prime is 634865333. The next prime is 634865353. The reversal of 634865345 is 543568436.

It is a happy number.

634865345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 329349904 + 305515441 = 18148^2 + 17479^2 .

It is a cyclic number.

It is not a de Polignac number, because 634865345 - 2²⁰ = 633816769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634865296 and 634865305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63486530 + ... + 63486539.

It is an arithmetic number, because the mean of its divisors is an integer number (190459605).

Almost surely, 2^634865345 is an apocalyptic number.

It is an amenable number.

634865345 is a deficient number, since it is larger than the sum of its proper divisors (126973075).

634865345 is a wasteful number, since it uses less digits than its factorization.

634865345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126973074.

The product of its digits is 1036800, while the sum is 44.

The square root of 634865345 is about 25196.5343847125. The cubic root of 634865345 is about 859.4630436649.

The spelling of 634865345 in words is "six hundred thirty-four million, eight hundred sixty-five thousand, three hundred forty-five".