66886017 has 12 divisors (see below), whose sum is σ = 98026320. Its totient is φ = 40536760.

The previous prime is 66886013. The next prime is 66886019. The reversal of 66886017 is 71068866.

It is not a de Polignac number, because 66886017 - 2² = 66886013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66886017.

It is not an unprimeable number, because it can be changed into a prime (66886013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91767 + ... + 92492.

It is an arithmetic number, because the mean of its divisors is an integer number (8168860).

Almost surely, 2^66886017 is an apocalyptic number.

It is an amenable number.

66886017 is a deficient number, since it is larger than the sum of its proper divisors (31140303).

66886017 is a wasteful number, since it uses less digits than its factorization.

66886017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184284 (or 184273 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 66886017 is about 8178.3871881930. The cubic root of 66886017 is about 405.9243572020.

The spelling of 66886017 in words is "sixty-six million, eight hundred eighty-six thousand, seventeen".