66576089 has 2 divisors, whose sum is σ = 66576090. Its totient is φ = 66576088.

The previous prime is 66576077. The next prime is 66576101. The reversal of 66576089 is 98067566.

It is a balanced prime because it is at equal distance from previous prime (66576077) and next prime (66576101).

It can be written as a sum of positive squares in only one way, i.e., 62094400 + 4481689 = 7880^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 66576089 - 2¹⁶ = 66510553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (66576049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33288044 + 33288045.

It is an arithmetic number, because the mean of its divisors is an integer number (33288045).

Almost surely, 2^66576089 is an apocalyptic number.

It is an amenable number.

66576089 is a deficient number, since it is larger than the sum of its proper divisors (1).

66576089 is an equidigital number, since it uses as much as digits as its factorization.

66576089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 66576089 is about 8159.4171973248. The cubic root of 66576089 is about 405.2964125866.

The spelling of 66576089 in words is "sixty-six million, five hundred seventy-six thousand, eighty-nine".