634932728731 has 8 divisors (see below), whose sum is σ = 768321957600. Its totient is φ = 512214638208.

The previous prime is 634932728701. The next prime is 634932728753. The reversal of 634932728731 is 137827239436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 634932728731 - 2⁹ = 634932728219 is a prime.

It is a super-2 number, since 2×634932728731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634932728701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2667784456 + ... + 2667784693.

It is an arithmetic number, because the mean of its divisors is an integer number (96040244700).

Almost surely, 2^634932728731 is an apocalyptic number.

634932728731 is a deficient number, since it is larger than the sum of its proper divisors (133389228869).

634932728731 is a wasteful number, since it uses less digits than its factorization.

634932728731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335569173.

The product of its digits is 9144576, while the sum is 55.

The spelling of 634932728731 in words is "six hundred thirty-four billion, nine hundred thirty-two million, seven hundred twenty-eight thousand, seven hundred thirty-one".