66044055 has 64 divisors (see below), whose sum is σ = 132857856. Its totient is φ = 27216000.

The previous prime is 66044039. The next prime is 66044089. The reversal of 66044055 is 55044066.

It is not a de Polignac number, because 66044055 - 2⁴ = 66044039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 243570 + ... + 243840.

It is an arithmetic number, because the mean of its divisors is an integer number (2075904).

Almost surely, 2^66044055 is an apocalyptic number.

66044055 is an abundant number, since it is smaller than the sum of its proper divisors (66813801).

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

66044055 is a wasteful number, since it uses less digits than its factorization.

66044055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 66044055 is about 8126.7493501399. The cubic root of 66044055 is about 404.2138996534.

The spelling of 66044055 in words is "sixty-six million, forty-four thousand, fifty-five".