66014789 has 2 divisors, whose sum is σ = 66014790. Its totient is φ = 66014788.

The previous prime is 66014777. The next prime is 66014801. The reversal of 66014789 is 98741066.

It is a balanced prime because it is at equal distance from previous prime (66014777) and next prime (66014801).

It can be written as a sum of positive squares in only one way, i.e., 59938564 + 6076225 = 7742^2 + 2465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66014789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66014089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33007394 + 33007395.

It is an arithmetic number, because the mean of its divisors is an integer number (33007395).

Almost surely, 2^66014789 is an apocalyptic number.

It is an amenable number.

66014789 is a deficient number, since it is larger than the sum of its proper divisors (1).

66014789 is an equidigital number, since it uses as much as digits as its factorization.

66014789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 66014789 is about 8124.9485536833. The cubic root of 66014789 is about 404.1541846052.

The spelling of 66014789 in words is "sixty-six million, fourteen thousand, seven hundred eighty-nine".