13066657 has 2 divisors, whose sum is σ = 13066658. Its totient is φ = 13066656.

The previous prime is 13066633. The next prime is 13066709. The reversal of 13066657 is 75666031.

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., 12988816 + 77841 = 3604^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 13066657 - 2²³ = 4678049 is a prime.

It is equal to p₈₅₃₂₇₉ and since 13066657 and 853279 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13066057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6533328 + 6533329.

It is an arithmetic number, because the mean of its divisors is an integer number (6533329).

Almost surely, 2^13066657 is an apocalyptic number.

It is an amenable number.

13066657 is a deficient number, since it is larger than the sum of its proper divisors (1).

13066657 is an equidigital number, since it uses as much as digits as its factorization.

13066657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 13066657 is about 3614.7831193586. The cubic root of 13066657 is about 235.5346631210.

The spelling of 13066657 in words is "thirteen million, sixty-six thousand, six hundred fifty-seven".