634402711 has 2 divisors, whose sum is σ = 634402712. Its totient is φ = 634402710.

The previous prime is 634402709. The next prime is 634402729. The reversal of 634402711 is 117204436.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 634402711 - 2¹ = 634402709 is a prime.

Together with 634402709, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 634402711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634402411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317201355 + 317201356.

It is an arithmetic number, because the mean of its divisors is an integer number (317201356).

Almost surely, 2^634402711 is an apocalyptic number.

634402711 is a deficient number, since it is larger than the sum of its proper divisors (1).

634402711 is an equidigital number, since it uses as much as digits as its factorization.

634402711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 634402711 is about 25187.3522030403. The cubic root of 634402711 is about 859.2542259208.

The spelling of 634402711 in words is "six hundred thirty-four million, four hundred two thousand, seven hundred eleven".