66849359 has 2 divisors, whose sum is σ = 66849360. Its totient is φ = 66849358.

The previous prime is 66849323. The next prime is 66849401. The reversal of 66849359 is 95394866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66849359 - 2²⁰ = 65800783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66849259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33424679 + 33424680.

It is an arithmetic number, because the mean of its divisors is an integer number (33424680).

Almost surely, 2^66849359 is an apocalyptic number.

66849359 is a deficient number, since it is larger than the sum of its proper divisors (1).

66849359 is an equidigital number, since it uses as much as digits as its factorization.

66849359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 66849359 is about 8176.1457301102. The cubic root of 66849359 is about 405.8501857729.

The spelling of 66849359 in words is "sixty-six million, eight hundred forty-nine thousand, three hundred fifty-nine".