68983399 has 4 divisors (see below), whose sum is σ = 73041264. Its totient is φ = 64925536.

The previous prime is 68983367. The next prime is 68983403. The reversal of 68983399 is 99338986.

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 68983399 - 2⁵ = 68983367 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 (68983349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2028907 + ... + 2028940.

It is an arithmetic number, because the mean of its divisors is an integer number (18260316).

Almost surely, 2^68983399 is an apocalyptic number.

68983399 is a deficient number, since it is larger than the sum of its proper divisors (4057865).

68983399 is a wasteful number, since it uses less digits than its factorization.

68983399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057864.

The product of its digits is 2519424, while the sum is 55.

The square root of 68983399 is about 8305.6245400331. The cubic root of 68983399 is about 410.1236965657.

The spelling of 68983399 in words is "sixty-eight million, nine hundred eighty-three thousand, three hundred ninety-nine".