634330868667 has 32 divisors (see below), whose sum is σ = 913036492800. Its totient is φ = 390464974368.

The previous prime is 634330868657. The next prime is 634330868683. The reversal of 634330868667 is 766868033436.

It is not a de Polignac number, because 634330868667 - 2¹¹ = 634330866619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 634330868667.

It is not an unprimeable number, because it can be changed into a prime (634330868657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144928 + ... + 1135634.

It is an arithmetic number, because the mean of its divisors is an integer number (28532390400).

Almost surely, 2^634330868667 is an apocalyptic number.

634330868667 is a deficient number, since it is larger than the sum of its proper divisors (278705624133).

634330868667 is a wasteful number, since it uses less digits than its factorization.

634330868667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991015.

The product of its (nonzero) digits is 62705664, while the sum is 60.

The spelling of 634330868667 in words is "six hundred thirty-four billion, three hundred thirty million, eight hundred sixty-eight thousand, six hundred sixty-seven".