68380369 has 4 divisors (see below), whose sum is σ = 68401060. Its totient is φ = 68359680.

The previous prime is 68380349. The next prime is 68380379. The reversal of 68380369 is 96308386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17114769 + 51265600 = 4137^2 + 7160^2 .

It is a cyclic number.

It is not a de Polignac number, because 68380369 - 2¹⁹ = 67856081 is a prime.

It is a super-2 number, since 2×68380369² = 9351749729152322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68380309) 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, 4152 + ... + 12409.

It is an arithmetic number, because the mean of its divisors is an integer number (17100265).

Almost surely, 2^68380369 is an apocalyptic number.

It is an amenable number.

68380369 is a deficient number, since it is larger than the sum of its proper divisors (20691).

68380369 is a wasteful number, since it uses less digits than its factorization.

68380369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20690.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 68380369 is about 8269.2423473980. The cubic root of 68380369 is about 408.9251421753.

The spelling of 68380369 in words is "sixty-eight million, three hundred eighty thousand, three hundred sixty-nine".