66968205 has 8 divisors (see below), whose sum is σ = 107149152. Its totient is φ = 35716368.

The previous prime is 66968171. The next prime is 66968227. The reversal of 66968205 is 50286966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66968205 - 2¹⁰ = 66967181 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2232259 + ... + 2232288.

It is an arithmetic number, because the mean of its divisors is an integer number (13393644).

Almost surely, 2^66968205 is an apocalyptic number.

It is an amenable number.

66968205 is a deficient number, since it is larger than the sum of its proper divisors (40180947).

66968205 is a wasteful number, since it uses less digits than its factorization.

66968205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464555.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 66968205 is about 8183.4103526586. The cubic root of 66968205 is about 406.0905526542.

The spelling of 66968205 in words is "sixty-six million, nine hundred sixty-eight thousand, two hundred five".