634687141 has 4 divisors (see below), whose sum is σ = 692385984. Its totient is φ = 576988300.

The previous prime is 634687111. The next prime is 634687169. The reversal of 634687141 is 141786436.

634687141 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 634687141 - 2¹⁵ = 634654373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634687094 and 634687103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634687111) 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, 28849405 + ... + 28849426.

It is an arithmetic number, because the mean of its divisors is an integer number (173096496).

Almost surely, 2^634687141 is an apocalyptic number.

It is an amenable number.

634687141 is a deficient number, since it is larger than the sum of its proper divisors (57698843).

634687141 is a wasteful number, since it uses less digits than its factorization.

634687141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57698842.

The product of its digits is 96768, while the sum is 40.

The square root of 634687141 is about 25192.9978565474. The cubic root of 634687141 is about 859.3826202670.

The spelling of 634687141 in words is "six hundred thirty-four million, six hundred eighty-seven thousand, one hundred forty-one".