68736511 has 2 divisors, whose sum is σ = 68736512. Its totient is φ = 68736510.

The previous prime is 68736497. The next prime is 68736523. The reversal of 68736511 is 11563786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68736511 - 2⁷ = 68736383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68736571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34368255 + 34368256.

It is an arithmetic number, because the mean of its divisors is an integer number (34368256).

Almost surely, 2^68736511 is an apocalyptic number.

68736511 is a deficient number, since it is larger than the sum of its proper divisors (1).

68736511 is an equidigital number, since it uses as much as digits as its factorization.

68736511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 68736511 is about 8290.7485186803. The cubic root of 68736511 is about 409.6338412458.

The spelling of 68736511 in words is "sixty-eight million, seven hundred thirty-six thousand, five hundred eleven".