634656067 has 2 divisors, whose sum is σ = 634656068. Its totient is φ = 634656066.

The previous prime is 634656037. The next prime is 634656073. The reversal of 634656067 is 760656436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 634656067 - 2²³ = 626267459 is a prime.

It is not a weakly prime, because it can be changed into another prime (634656037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317328033 + 317328034.

It is an arithmetic number, because the mean of its divisors is an integer number (317328034).

Almost surely, 2^634656067 is an apocalyptic number.

634656067 is a deficient number, since it is larger than the sum of its proper divisors (1).

634656067 is an equidigital number, since it uses as much as digits as its factorization.

634656067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 634656067 is about 25192.3811300163. The cubic root of 634656067 is about 859.3685950412.

The spelling of 634656067 in words is "six hundred thirty-four million, six hundred fifty-six thousand, sixty-seven".