66845058 has 32 divisors (see below), whose sum is σ = 158060160. Its totient is φ = 18439680.

The previous prime is 66845057. The next prime is 66845063. The reversal of 66845058 is 85054866.

It is a super-3 number, since 3×66845058³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (66845057) 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, 26223 + ... + 28658.

It is an arithmetic number, because the mean of its divisors is an integer number (4939380).

Almost surely, 2^66845058 is an apocalyptic number.

66845058 is an abundant number, since it is smaller than the sum of its proper divisors (91215102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66845058 is a wasteful number, since it uses less digits than its factorization.

66845058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54922.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 66845058 is about 8175.8827046381. The cubic root of 66845058 is about 405.8414816302.

The spelling of 66845058 in words is "sixty-six million, eight hundred forty-five thousand, fifty-eight".