634000621 has 2 divisors, whose sum is σ = 634000622. Its totient is φ = 634000620.

The previous prime is 634000603. The next prime is 634000673. The reversal of 634000621 is 126000436.

634000621 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., 317338596 + 316662025 = 17814^2 + 17795^2 .

It is a cyclic number.

It is not a de Polignac number, because 634000621 - 2¹⁵ = 633967853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 634000592 and 634000601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634000691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317000310 + 317000311.

It is an arithmetic number, because the mean of its divisors is an integer number (317000311).

Almost surely, 2^634000621 is an apocalyptic number.

It is an amenable number.

634000621 is a deficient number, since it is larger than the sum of its proper divisors (1).

634000621 is an equidigital number, since it uses as much as digits as its factorization.

634000621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 634000621 is about 25179.3689555557. The cubic root of 634000621 is about 859.0726532675.

The spelling of 634000621 in words is "six hundred thirty-four million, six hundred twenty-one", and thus it is an aban number.