66485369 has 2 divisors, whose sum is σ = 66485370. Its totient is φ = 66485368.

The previous prime is 66485347. The next prime is 66485423. The reversal of 66485369 is 96358466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60295225 + 6190144 = 7765^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 66485369 - 2²⁰ = 65436793 is a prime.

It is a super-2 number, since 2×66485369² = 8840608582132322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66485569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33242684 + 33242685.

It is an arithmetic number, because the mean of its divisors is an integer number (33242685).

Almost surely, 2^66485369 is an apocalyptic number.

It is an amenable number.

66485369 is a deficient number, since it is larger than the sum of its proper divisors (1).

66485369 is an equidigital number, since it uses as much as digits as its factorization.

66485369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 47.

The square root of 66485369 is about 8153.8560816340. The cubic root of 66485369 is about 405.1122363323.

The spelling of 66485369 in words is "sixty-six million, four hundred eighty-five thousand, three hundred sixty-nine".