66365479 has 2 divisors, whose sum is σ = 66365480. Its totient is φ = 66365478.

The previous prime is 66365473. The next prime is 66365521. The reversal of 66365479 is 97456366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66365479 - 2⁵ = 66365447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66365473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33182739 + 33182740.

It is an arithmetic number, because the mean of its divisors is an integer number (33182740).

Almost surely, 2^66365479 is an apocalyptic number.

66365479 is a deficient number, since it is larger than the sum of its proper divisors (1).

66365479 is an equidigital number, since it uses as much as digits as its factorization.

66365479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 46.

The square root of 66365479 is about 8146.5010280488. The cubic root of 66365479 is about 404.8685830793.

The spelling of 66365479 in words is "sixty-six million, three hundred sixty-five thousand, four hundred seventy-nine".