68414813 has 4 divisors (see below), whose sum is σ = 70263900. Its totient is φ = 66565728.

The previous prime is 68414809. The next prime is 68414821. The reversal of 68414813 is 31841486.

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 23551609 + 44863204 = 4853^2 + 6698^2 .

It is a cyclic number.

It is not a de Polignac number, because 68414813 - 2² = 68414809 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 (68414873) 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, 924488 + ... + 924561.

It is an arithmetic number, because the mean of its divisors is an integer number (17565975).

Almost surely, 2^68414813 is an apocalyptic number.

It is an amenable number.

68414813 is a deficient number, since it is larger than the sum of its proper divisors (1849087).

68414813 is a wasteful number, since it uses less digits than its factorization.

68414813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849086.

The product of its digits is 18432, while the sum is 35.

The square root of 68414813 is about 8271.3247427483. The cubic root of 68414813 is about 408.9937907925.

The spelling of 68414813 in words is "sixty-eight million, four hundred fourteen thousand, eight hundred thirteen".