68229899 has 4 divisors (see below), whose sum is σ = 68262264. Its totient is φ = 68197536.

The previous prime is 68229883. The next prime is 68229907. The reversal of 68229899 is 99892286.

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 68229899 - 2⁴ = 68229883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68229899.

It is not an unprimeable number, because it can be changed into a prime (68229859) 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, 12782 + ... + 17315.

It is an arithmetic number, because the mean of its divisors is an integer number (17065566).

Almost surely, 2^68229899 is an apocalyptic number.

68229899 is a deficient number, since it is larger than the sum of its proper divisors (32365).

68229899 is a wasteful number, since it uses less digits than its factorization.

68229899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32364.

The product of its digits is 1119744, while the sum is 53.

The square root of 68229899 is about 8260.1391634766. The cubic root of 68229899 is about 408.6249773036.

The spelling of 68229899 in words is "sixty-eight million, two hundred twenty-nine thousand, eight hundred ninety-nine".