66066887 has 2 divisors, whose sum is σ = 66066888. Its totient is φ = 66066886.

The previous prime is 66066883. The next prime is 66066899. The reversal of 66066887 is 78866066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66066887 - 2² = 66066883 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66066883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33033443 + 33033444.

It is an arithmetic number, because the mean of its divisors is an integer number (33033444).

Almost surely, 2^66066887 is an apocalyptic number.

66066887 is a deficient number, since it is larger than the sum of its proper divisors (1).

66066887 is an equidigital number, since it uses as much as digits as its factorization.

66066887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 66066887 is about 8128.1539724589. The cubic root of 66066887 is about 404.2604743650.

The spelling of 66066887 in words is "sixty-six million, sixty-six thousand, eight hundred eighty-seven".