68706073 has 4 divisors (see below), whose sum is σ = 70002468. Its totient is φ = 67409680.

The previous prime is 68706059. The next prime is 68706089. The reversal of 68706073 is 37060786.

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 48608784 + 20097289 = 6972^2 + 4483^2 .

It is a cyclic number.

It is not a de Polignac number, because 68706073 - 2⁵ = 68706041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68706173) 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, 648118 + ... + 648223.

It is an arithmetic number, because the mean of its divisors is an integer number (17500617).

Almost surely, 2^68706073 is an apocalyptic number.

It is an amenable number.

68706073 is a deficient number, since it is larger than the sum of its proper divisors (1296395).

68706073 is a wasteful number, since it uses less digits than its factorization.

68706073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296394.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 68706073 is about 8288.9126548661. The cubic root of 68706073 is about 409.5733674376.

The spelling of 68706073 in words is "sixty-eight million, seven hundred six thousand, seventy-three".