68943599 has 2 divisors, whose sum is σ = 68943600. Its totient is φ = 68943598.

The previous prime is 68943587. The next prime is 68943607. The reversal of 68943599 is 99534986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68943599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68943599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68946599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34471799 + 34471800.

It is an arithmetic number, because the mean of its divisors is an integer number (34471800).

Almost surely, 2^68943599 is an apocalyptic number.

68943599 is a deficient number, since it is larger than the sum of its proper divisors (1).

68943599 is an equidigital number, since it uses as much as digits as its factorization.

68943599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2099520, while the sum is 53.

The square root of 68943599 is about 8303.2282276233. The cubic root of 68943599 is about 410.0448077145.

The spelling of 68943599 in words is "sixty-eight million, nine hundred forty-three thousand, five hundred ninety-nine".