634920793673 has 2 divisors, whose sum is σ = 634920793674. Its totient is φ = 634920793672.

The previous prime is 634920793649. The next prime is 634920793733. The reversal of 634920793673 is 376397029436.

It is a happy number.

634920793673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386993479744 + 247927313929 = 622088^2 + 497923^2 .

It is a cyclic number.

It is not a de Polignac number, because 634920793673 - 2¹⁶ = 634920728137 is a prime.

It is not a weakly prime, because it can be changed into another prime (634920793603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317460396836 + 317460396837.

It is an arithmetic number, because the mean of its divisors is an integer number (317460396837).

Almost surely, 2^634920793673 is an apocalyptic number.

It is an amenable number.

634920793673 is a deficient number, since it is larger than the sum of its proper divisors (1).

634920793673 is an equidigital number, since it uses as much as digits as its factorization.

634920793673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30862944, while the sum is 59.

The spelling of 634920793673 in words is "six hundred thirty-four billion, nine hundred twenty million, seven hundred ninety-three thousand, six hundred seventy-three".