634476673 has 2 divisors, whose sum is σ = 634476674. Its totient is φ = 634476672.

The previous prime is 634476649. The next prime is 634476751. The reversal of 634476673 is 376674436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 582160384 + 52316289 = 24128^2 + 7233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634476673 is a prime.

It is a super-2 number, since 2×634476673² = 805121297162297858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (634476373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317238336 + 317238337.

It is an arithmetic number, because the mean of its divisors is an integer number (317238337).

Almost surely, 2^634476673 is an apocalyptic number.

It is an amenable number.

634476673 is a deficient number, since it is larger than the sum of its proper divisors (1).

634476673 is an equidigital number, since it uses as much as digits as its factorization.

634476673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 46.

The square root of 634476673 is about 25188.8203971524. The cubic root of 634476673 is about 859.2876167467.

The spelling of 634476673 in words is "six hundred thirty-four million, four hundred seventy-six thousand, six hundred seventy-three".