66755359 has 4 divisors (see below), whose sum is σ = 72824040. Its totient is φ = 60686680.

The previous prime is 66755357. The next prime is 66755387. The reversal of 66755359 is 95355766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66755359 - 2¹ = 66755357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66755357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034324 + ... + 3034345.

It is an arithmetic number, because the mean of its divisors is an integer number (18206010).

Almost surely, 2^66755359 is an apocalyptic number.

66755359 is a deficient number, since it is larger than the sum of its proper divisors (6068681).

66755359 is a wasteful number, since it uses less digits than its factorization.

66755359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068680.

The product of its digits is 850500, while the sum is 46.

The square root of 66755359 is about 8170.3952780756. The cubic root of 66755359 is about 405.6598682517.

The spelling of 66755359 in words is "sixty-six million, seven hundred fifty-five thousand, three hundred fifty-nine".