68626511 has 2 divisors, whose sum is σ = 68626512. Its totient is φ = 68626510.

The previous prime is 68626487. The next prime is 68626513. The reversal of 68626511 is 11562686.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68626511 - 2⁶ = 68626447 is a prime.

Together with 68626513, 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 (68626513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34313255 + 34313256.

It is an arithmetic number, because the mean of its divisors is an integer number (34313256).

Almost surely, 2^68626511 is an apocalyptic number.

68626511 is a deficient number, since it is larger than the sum of its proper divisors (1).

68626511 is an equidigital number, since it uses as much as digits as its factorization.

68626511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 68626511 is about 8284.1119620633. Note that the first 3 decimals coincide. The cubic root of 68626511 is about 409.4152103229.

The spelling of 68626511 in words is "sixty-eight million, six hundred twenty-six thousand, five hundred eleven".