68513567 has 2 divisors, whose sum is σ = 68513568. Its totient is φ = 68513566.

The previous prime is 68513561. The next prime is 68513569. The reversal of 68513567 is 76531586.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68513567 - 2⁴ = 68513551 is a prime.

Together with 68513569, 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 (68513561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34256783 + 34256784.

It is an arithmetic number, because the mean of its divisors is an integer number (34256784).

Almost surely, 2^68513567 is an apocalyptic number.

68513567 is a deficient number, since it is larger than the sum of its proper divisors (1).

68513567 is an equidigital number, since it uses as much as digits as its factorization.

68513567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 68513567 is about 8277.2922504887. The cubic root of 68513567 is about 409.1904848171.

The spelling of 68513567 in words is "sixty-eight million, five hundred thirteen thousand, five hundred sixty-seven".