66897059 has 2 divisors, whose sum is σ = 66897060. Its totient is φ = 66897058.

The previous prime is 66897013. The next prime is 66897071. The reversal of 66897059 is 95079866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66897059 - 2¹² = 66892963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66896998 and 66897016.

It is not a weakly prime, because it can be changed into another prime (66897079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33448529 + 33448530.

It is an arithmetic number, because the mean of its divisors is an integer number (33448530).

Almost surely, 2^66897059 is an apocalyptic number.

66897059 is a deficient number, since it is larger than the sum of its proper divisors (1).

66897059 is an equidigital number, since it uses as much as digits as its factorization.

66897059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 66897059 is about 8179.0622323100. The cubic root of 66897059 is about 405.9466935603.

The spelling of 66897059 in words is "sixty-six million, eight hundred ninety-seven thousand, fifty-nine".