634708427 has 2 divisors, whose sum is σ = 634708428. Its totient is φ = 634708426.

The previous prime is 634708367. The next prime is 634708463. The reversal of 634708427 is 724807436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634708427 - 2⁸ = 634708171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (634708127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317354213 + 317354214.

It is an arithmetic number, because the mean of its divisors is an integer number (317354214).

Almost surely, 2^634708427 is an apocalyptic number.

634708427 is a deficient number, since it is larger than the sum of its proper divisors (1).

634708427 is an equidigital number, since it uses as much as digits as its factorization.

634708427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 634708427 is about 25193.4203116607. The cubic root of 634708427 is about 859.3922274224.

Subtracting 634708427 from its reverse (724807436), we obtain a palindrome (90099009).

The spelling of 634708427 in words is "six hundred thirty-four million, seven hundred eight thousand, four hundred twenty-seven".