66000479 has 2 divisors, whose sum is σ = 66000480. Its totient is φ = 66000478.

The previous prime is 66000469. The next prime is 66000497. The reversal of 66000479 is 97400066.

Together with next prime (66000497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66000479 - 2⁸ = 66000223 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 (66000419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33000239 + 33000240.

It is an arithmetic number, because the mean of its divisors is an integer number (33000240).

Almost surely, 2^66000479 is an apocalyptic number.

66000479 is a deficient number, since it is larger than the sum of its proper divisors (1).

66000479 is an equidigital number, since it uses as much as digits as its factorization.

66000479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 66000479 is about 8124.0678849946. The cubic root of 66000479 is about 404.1249797134.

The spelling of 66000479 in words is "sixty-six million, four hundred seventy-nine", and thus it is an aban number.