634368673 has 2 divisors, whose sum is σ = 634368674. Its totient is φ = 634368672.

The previous prime is 634368641. The next prime is 634368689. The reversal of 634368673 is 376863436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547934464 + 86434209 = 23408^2 + 9297^2 .

It is a cyclic number.

It is not a de Polignac number, because 634368673 - 2⁵ = 634368641 is a prime.

It is a super-2 number, since 2×634368673² = 804847226567561858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (634368373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317184336 + 317184337.

It is an arithmetic number, because the mean of its divisors is an integer number (317184337).

Almost surely, 2^634368673 is an apocalyptic number.

It is an amenable number.

634368673 is a deficient number, since it is larger than the sum of its proper divisors (1).

634368673 is an equidigital number, since it uses as much as digits as its factorization.

634368673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 46.

The square root of 634368673 is about 25186.6764977041. The cubic root of 634368673 is about 859.2388582803.

The spelling of 634368673 in words is "six hundred thirty-four million, three hundred sixty-eight thousand, six hundred seventy-three".