66886394 has 8 divisors (see below), whose sum is σ = 100386048. Its totient is φ = 33424380.

The previous prime is 66886387. The next prime is 66886411. The reversal of 66886394 is 49368866.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4442 + ... + 12389.

It is an arithmetic number, because the mean of its divisors is an integer number (12548256).

Almost surely, 2^66886394 is an apocalyptic number.

66886394 is a deficient number, since it is larger than the sum of its proper divisors (33499654).

66886394 is a wasteful number, since it uses less digits than its factorization.

66886394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18820.

The product of its digits is 1492992, while the sum is 50.

The square root of 66886394 is about 8178.4102367147. The cubic root of 66886394 is about 405.9251198586.

The spelling of 66886394 in words is "sixty-six million, eight hundred eighty-six thousand, three hundred ninety-four".