68936399 has 4 divisors (see below), whose sum is σ = 78784464. Its totient is φ = 59088336.

The previous prime is 68936381. The next prime is 68936423. The reversal of 68936399 is 99363986.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99363986 = 2 ⋅49681993.

It is a cyclic number.

It is not a de Polignac number, because 68936399 - 2¹⁶ = 68870863 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 68936399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68936299) 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, 4924022 + ... + 4924035.

It is an arithmetic number, because the mean of its divisors is an integer number (19696116).

Almost surely, 2^68936399 is an apocalyptic number.

68936399 is a deficient number, since it is larger than the sum of its proper divisors (9848065).

68936399 is an equidigital number, since it uses as much as digits as its factorization.

68936399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848064.

The product of its digits is 1889568, while the sum is 53.

The square root of 68936399 is about 8302.7946499959. The cubic root of 68936399 is about 410.0305331217.

The spelling of 68936399 in words is "sixty-eight million, nine hundred thirty-six thousand, three hundred ninety-nine".