68736385 has 4 divisors (see below), whose sum is σ = 82483668. Its totient is φ = 54989104.

The previous prime is 68736383. The next prime is 68736401. The reversal of 68736385 is 58363786.

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 46908801 + 21827584 = 6849^2 + 4672^2 .

It is a cyclic number.

It is not a de Polignac number, because 68736385 - 2¹ = 68736383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68736383) 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, 6873634 + ... + 6873643.

It is an arithmetic number, because the mean of its divisors is an integer number (20620917).

Almost surely, 2^68736385 is an apocalyptic number.

It is an amenable number.

68736385 is a deficient number, since it is larger than the sum of its proper divisors (13747283).

68736385 is a wasteful number, since it uses less digits than its factorization.

68736385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13747282.

The product of its digits is 725760, while the sum is 46.

The square root of 68736385 is about 8290.7409198455. The cubic root of 68736385 is about 409.6335909475.

The spelling of 68736385 in words is "sixty-eight million, seven hundred thirty-six thousand, three hundred eighty-five".