634896959 has 2 divisors, whose sum is σ = 634896960. Its totient is φ = 634896958.

The previous prime is 634896937. The next prime is 634896979. The reversal of 634896959 is 959698436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634896959 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 634896898 and 634896907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634896929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317448479 + 317448480.

It is an arithmetic number, because the mean of its divisors is an integer number (317448480).

Almost surely, 2^634896959 is an apocalyptic number.

634896959 is a deficient number, since it is larger than the sum of its proper divisors (1).

634896959 is an equidigital number, since it uses as much as digits as its factorization.

634896959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 59.

The square root of 634896959 is about 25197.1617250832. The cubic root of 634896959 is about 859.4773094794.

The spelling of 634896959 in words is "six hundred thirty-four million, eight hundred ninety-six thousand, nine hundred fifty-nine".