66442083 has 16 divisors (see below), whose sum is σ = 93004800. Its totient is φ = 42135840.

The previous prime is 66442073. The next prime is 66442093. The reversal of 66442083 is 38024466.

It is an interprime number because it is at equal distance from previous prime (66442073) and next prime (66442093).

It is not a de Polignac number, because 66442083 - 2⁸ = 66441827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66442003) 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, 568 + ... + 11541.

It is an arithmetic number, because the mean of its divisors is an integer number (5812800).

Almost surely, 2^66442083 is an apocalyptic number.

66442083 is a deficient number, since it is larger than the sum of its proper divisors (26562717).

66442083 is a wasteful number, since it uses less digits than its factorization.

66442083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12202.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 66442083 is about 8151.2013225046. The cubic root of 66442083 is about 405.0242997156.

The spelling of 66442083 in words is "sixty-six million, four hundred forty-two thousand, eighty-three".