66886089 has 12 divisors (see below), whose sum is σ = 89791056. Its totient is φ = 44287848.

The previous prime is 66886069. The next prime is 66886097. The reversal of 66886089 is 98068866.

It is not a de Polignac number, because 66886089 - 2⁷ = 66885961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66886019) 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, 118522 + ... + 119084.

It is an arithmetic number, because the mean of its divisors is an integer number (7482588).

Almost surely, 2^66886089 is an apocalyptic number.

It is an amenable number.

66886089 is a deficient number, since it is larger than the sum of its proper divisors (22904967).

66886089 is an equidigital number, since it uses as much as digits as its factorization.

66886089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 765 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 66886089 is about 8178.3915900377. The cubic root of 66886089 is about 405.9245028555.

The spelling of 66886089 in words is "sixty-six million, eight hundred eighty-six thousand, eighty-nine".