634623605331 has 8 divisors (see below), whose sum is σ = 846211559424. Its totient is φ = 423059027400.

The previous prime is 634623605269. The next prime is 634623605339. The reversal of 634623605331 is 133506326436.

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 634623605331 - 2⁹ = 634623604819 is a prime.

It is a super-2 number, since 2×634623605331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634623605339) 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 7 ways as a sum of consecutive naturals, for example, 5780595 + ... + 5889356.

It is an arithmetic number, because the mean of its divisors is an integer number (105776444928).

Almost surely, 2^634623605331 is an apocalyptic number.

634623605331 is a deficient number, since it is larger than the sum of its proper divisors (211587954093).

634623605331 is a wasteful number, since it uses less digits than its factorization.

634623605331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11688081.

The product of its (nonzero) digits is 699840, while the sum is 42.

The spelling of 634623605331 in words is "six hundred thirty-four billion, six hundred twenty-three million, six hundred five thousand, three hundred thirty-one".