634746269 has 2 divisors, whose sum is σ = 634746270. Its totient is φ = 634746268.

The previous prime is 634746239. The next prime is 634746271. The reversal of 634746269 is 962647436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587480644 + 47265625 = 24238^2 + 6875^2 .

It is a cyclic number.

It is not a de Polignac number, because 634746269 - 2¹⁶ = 634680733 is a prime.

It is a super-2 number, since 2×634746269² = 805805652018840722, which contains 22 as substring.

Together with 634746271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634746209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317373134 + 317373135.

It is an arithmetic number, because the mean of its divisors is an integer number (317373135).

Almost surely, 2^634746269 is an apocalyptic number.

It is an amenable number.

634746269 is a deficient number, since it is larger than the sum of its proper divisors (1).

634746269 is an equidigital number, since it uses as much as digits as its factorization.

634746269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 47.

The square root of 634746269 is about 25194.1713298930. The cubic root of 634746269 is about 859.4093063797.

The spelling of 634746269 in words is "six hundred thirty-four million, seven hundred forty-six thousand, two hundred sixty-nine".