634766670022427 has 4 divisors (see below), whose sum is σ = 641310656311416. Its totient is φ = 628222683733440.

The previous prime is 634766670022423. The next prime is 634766670022439. The reversal of 634766670022427 is 724220076667436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634766670022427 - 2² = 634766670022423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634766670022427.

It is not an unprimeable number, because it can be changed into a prime (634766670022423) 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, 3271993144349 + ... + 3271993144542.

It is an arithmetic number, because the mean of its divisors is an integer number (160327664077854).

Almost surely, 2^{634766670022427} is an apocalyptic number.

634766670022427 is a deficient number, since it is larger than the sum of its proper divisors (6543986288989).

634766670022427 is an equidigital number, since it uses as much as digits as its factorization.

634766670022427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543986288988.

The product of its (nonzero) digits is 170698752, while the sum is 62.

The spelling of 634766670022427 in words is "six hundred thirty-four trillion, seven hundred sixty-six billion, six hundred seventy million, twenty-two thousand, four hundred twenty-seven".