66894205 has 8 divisors (see below), whose sum is σ = 91740672. Its totient is φ = 45870288.

The previous prime is 66894199. The next prime is 66894209. The reversal of 66894205 is 50249866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66894205 - 2⁵ = 66894173 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 (66894209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955597 + ... + 955666.

It is an arithmetic number, because the mean of its divisors is an integer number (11467584).

Almost surely, 2^66894205 is an apocalyptic number.

It is an amenable number.

66894205 is a deficient number, since it is larger than the sum of its proper divisors (24846467).

66894205 is a wasteful number, since it uses less digits than its factorization.

66894205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911275.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 66894205 is about 8178.8877605699. The cubic root of 66894205 is about 405.9409205694.

The spelling of 66894205 in words is "sixty-six million, eight hundred ninety-four thousand, two hundred five".