66014477 has 2 divisors, whose sum is σ = 66014478. Its totient is φ = 66014476.

The previous prime is 66014471. The next prime is 66014491. The reversal of 66014477 is 77441066.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56460196 + 9554281 = 7514^2 + 3091^2 .

It is a cyclic number.

It is not a de Polignac number, because 66014477 - 2⁶ = 66014413 is a prime.

It is a super-2 number, since 2×66014477² = 8715822347167058, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66014471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33007238 + 33007239.

It is an arithmetic number, because the mean of its divisors is an integer number (33007239).

Almost surely, 2^66014477 is an apocalyptic number.

It is an amenable number.

66014477 is a deficient number, since it is larger than the sum of its proper divisors (1).

66014477 is an equidigital number, since it uses as much as digits as its factorization.

66014477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 66014477 is about 8124.9293535390. The cubic root of 66014477 is about 404.1535478979.

The spelling of 66014477 in words is "sixty-six million, fourteen thousand, four hundred seventy-seven".