68691799 has 8 divisors (see below), whose sum is σ = 75195792. Its totient is φ = 62231040.

The previous prime is 68691797. The next prime is 68691803. The reversal of 68691799 is 99719686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68691799 - 2¹ = 68691797 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 (68691793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7434 + ... + 13879.

It is an arithmetic number, because the mean of its divisors is an integer number (9399474).

Almost surely, 2^68691799 is an apocalyptic number.

68691799 is a deficient number, since it is larger than the sum of its proper divisors (6503993).

68691799 is a wasteful number, since it uses less digits than its factorization.

68691799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21617.

The product of its digits is 1469664, while the sum is 55.

The square root of 68691799 is about 8288.0515804379. The cubic root of 68691799 is about 409.5450018948.

It can be divided in two parts, 6869 and 1799, that added together give a palindrome (8668).

The spelling of 68691799 in words is "sixty-eight million, six hundred ninety-one thousand, seven hundred ninety-nine".