68736667 has 2 divisors, whose sum is σ = 68736668. Its totient is φ = 68736666.

The previous prime is 68736659. The next prime is 68736671. The reversal of 68736667 is 76663786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68736667 - 2³ = 68736659 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68736667.

It is not a weakly prime, because it can be changed into another prime (68736637) 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, 34368333 + 34368334.

It is an arithmetic number, because the mean of its divisors is an integer number (34368334).

Almost surely, 2^68736667 is an apocalyptic number.

68736667 is a deficient number, since it is larger than the sum of its proper divisors (1).

68736667 is an equidigital number, since it uses as much as digits as its factorization.

68736667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 68736667 is about 8290.7579267519. The cubic root of 68736667 is about 409.6341511385.

The spelling of 68736667 in words is "sixty-eight million, seven hundred thirty-six thousand, six hundred sixty-seven".