66016087 has 2 divisors, whose sum is σ = 66016088. Its totient is φ = 66016086.

The previous prime is 66016063. The next prime is 66016129. The reversal of 66016087 is 78061066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66016087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66016007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33008043 + 33008044.

It is an arithmetic number, because the mean of its divisors is an integer number (33008044).

Almost surely, 2^66016087 is an apocalyptic number.

66016087 is a deficient number, since it is larger than the sum of its proper divisors (1).

66016087 is an equidigital number, since it uses as much as digits as its factorization.

66016087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 66016087 is about 8125.0284307195. The cubic root of 66016087 is about 404.1568334495.

The spelling of 66016087 in words is "sixty-six million, sixteen thousand, eighty-seven".