68228999 has 4 divisors (see below), whose sum is σ = 70073064. Its totient is φ = 66384936.

The previous prime is 68228969. The next prime is 68229013. The reversal of 68228999 is 99982286.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99982286 = 2 ⋅49991143.

It is a cyclic number.

It is not a de Polignac number, because 68228999 - 2¹⁶ = 68163463 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 68228999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68228959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921977 + ... + 922050.

It is an arithmetic number, because the mean of its divisors is an integer number (17518266).

Almost surely, 2^68228999 is an apocalyptic number.

68228999 is a deficient number, since it is larger than the sum of its proper divisors (1844065).

68228999 is a wasteful number, since it uses less digits than its factorization.

68228999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844064.

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

The square root of 68228999 is about 8260.0846847959. The cubic root of 68228999 is about 408.6231806128.

The spelling of 68228999 in words is "sixty-eight million, two hundred twenty-eight thousand, nine hundred ninety-nine".