66104259 has 16 divisors (see below), whose sum is σ = 97236384. Its totient is φ = 39686400.

The previous prime is 66104257. The next prime is 66104263. The reversal of 66104259 is 95240166.

It is not a de Polignac number, because 66104259 - 2¹ = 66104257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66104251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19072 + ... + 22269.

It is an arithmetic number, because the mean of its divisors is an integer number (6077274).

Almost surely, 2^66104259 is an apocalyptic number.

66104259 is a deficient number, since it is larger than the sum of its proper divisors (31132125).

66104259 is a wasteful number, since it uses less digits than its factorization.

66104259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41398.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 66104259 is about 8130.4525704293. The cubic root of 66104259 is about 404.3366858900.

The spelling of 66104259 in words is "sixty-six million, one hundred four thousand, two hundred fifty-nine".