68066799 has 16 divisors (see below), whose sum is σ = 94264320. Its totient is φ = 43636320.

The previous prime is 68066783. The next prime is 68066813. The reversal of 68066799 is 99766086.

It is a happy number.

It is not a de Polignac number, because 68066799 - 2⁴ = 68066783 is a prime.

It is a super-2 number, since 2×68066799² = 9266178252212802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68066749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22134 + ... + 25020.

It is an arithmetic number, because the mean of its divisors is an integer number (5891520).

Almost surely, 2^68066799 is an apocalyptic number.

68066799 is a deficient number, since it is larger than the sum of its proper divisors (26197521).

68066799 is a wasteful number, since it uses less digits than its factorization.

68066799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 68066799 is about 8250.2605413405. The cubic root of 68066799 is about 408.2991186474.

The spelling of 68066799 in words is "sixty-eight million, sixty-six thousand, seven hundred ninety-nine".