68545199 has 4 divisors (see below), whose sum is σ = 68703936. Its totient is φ = 68386464.

The previous prime is 68545193. The next prime is 68545229. The reversal of 68545199 is 99154586.

It is a happy number.

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 68545199 - 2⁸ = 68544943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68545193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78719 + ... + 79584.

It is an arithmetic number, because the mean of its divisors is an integer number (17175984).

Almost surely, 2^68545199 is an apocalyptic number.

68545199 is a deficient number, since it is larger than the sum of its proper divisors (158737).

68545199 is a wasteful number, since it uses less digits than its factorization.

68545199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158736.

The product of its digits is 388800, while the sum is 47.

The square root of 68545199 is about 8279.2027997869. The cubic root of 68545199 is about 409.2534481226.

The spelling of 68545199 in words is "sixty-eight million, five hundred forty-five thousand, one hundred ninety-nine".