634611371 has 2 divisors, whose sum is σ = 634611372. Its totient is φ = 634611370.

The previous prime is 634611317. The next prime is 634611389. The reversal of 634611371 is 173116436.

Together with previous prime (634611317) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634611371 is a prime.

It is not a weakly prime, because it can be changed into another prime (634611301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317305685 + 317305686.

It is an arithmetic number, because the mean of its divisors is an integer number (317305686).

Almost surely, 2^634611371 is an apocalyptic number.

634611371 is a deficient number, since it is larger than the sum of its proper divisors (1).

634611371 is an equidigital number, since it uses as much as digits as its factorization.

634611371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 634611371 is about 25191.4940208000. The cubic root of 634611371 is about 859.3484207334.

The spelling of 634611371 in words is "six hundred thirty-four million, six hundred eleven thousand, three hundred seventy-one".