68565899 has 4 divisors (see below), whose sum is σ = 70238280. Its totient is φ = 66893520.

The previous prime is 68565881. The next prime is 68565901. The reversal of 68565899 is 99856586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68565899 - 2⁸ = 68565643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68565839) 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 in 3 ways as a sum of consecutive naturals, for example, 836129 + ... + 836210.

It is an arithmetic number, because the mean of its divisors is an integer number (17559570).

Almost surely, 2^68565899 is an apocalyptic number.

68565899 is a deficient number, since it is larger than the sum of its proper divisors (1672381).

68565899 is a wasteful number, since it uses less digits than its factorization.

68565899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672380.

The product of its digits is 4665600, while the sum is 56.

The square root of 68565899 is about 8280.4528257819. The cubic root of 68565899 is about 409.2946408629.

The spelling of 68565899 in words is "sixty-eight million, five hundred sixty-five thousand, eight hundred ninety-nine".