634759487264 has 24 divisors (see below), whose sum is σ = 1428208846848. Its totient is φ = 272039780160.

The previous prime is 634759487261. The next prime is 634759487279. The reversal of 634759487264 is 462784957436.

It is a self number, because there is not a number n which added to its sum of digits gives 634759487264.

It is not an unprimeable number, because it can be changed into a prime (634759487261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416873632 + ... + 1416874079.

It is an arithmetic number, because the mean of its divisors is an integer number (59508701952).

Almost surely, 2^634759487264 is an apocalyptic number.

It is an amenable number.

634759487264 is an abundant number, since it is smaller than the sum of its proper divisors (793449359584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634759487264 is a wasteful number, since it uses less digits than its factorization.

634759487264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833747728 (or 2833747720 counting only the distinct ones).

The product of its digits is 243855360, while the sum is 65.

The spelling of 634759487264 in words is "six hundred thirty-four billion, seven hundred fifty-nine million, four hundred eighty-seven thousand, two hundred sixty-four".