66240083 has 16 divisors (see below), whose sum is σ = 82869696. Its totient is φ = 51546240.

The previous prime is 66240077. The next prime is 66240091. The reversal of 66240083 is 38004266.

It is a cyclic number.

It is not a de Polignac number, because 66240083 - 2¹⁶ = 66174547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66240043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416 + ... + 11517.

It is an arithmetic number, because the mean of its divisors is an integer number (5179356).

Almost surely, 2^66240083 is an apocalyptic number.

66240083 is a deficient number, since it is larger than the sum of its proper divisors (16629613).

66240083 is a wasteful number, since it uses less digits than its factorization.

66240083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12014.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 66240083 is about 8138.8010787830. The cubic root of 66240083 is about 404.6134257758.

The spelling of 66240083 in words is "sixty-six million, two hundred forty thousand, eighty-three".