68551873 has 4 divisors (see below), whose sum is σ = 73825108. Its totient is φ = 63278640.

The previous prime is 68551859. The next prime is 68551883. The reversal of 68551873 is 37815586.

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 32455809 + 36096064 = 5697^2 + 6008^2 .

It is a cyclic number.

It is not a de Polignac number, because 68551873 - 2⁵ = 68551841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68551823) 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, 2636598 + ... + 2636623.

It is an arithmetic number, because the mean of its divisors is an integer number (18456277).

Almost surely, 2^68551873 is an apocalyptic number.

It is an amenable number.

68551873 is a deficient number, since it is larger than the sum of its proper divisors (5273235).

68551873 is a wasteful number, since it uses less digits than its factorization.

68551873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273234.

The product of its digits is 201600, while the sum is 43.

The square root of 68551873 is about 8279.6058481065. The cubic root of 68551873 is about 409.2667302047.

The spelling of 68551873 in words is "sixty-eight million, five hundred fifty-one thousand, eight hundred seventy-three".