66110055 has 32 divisors (see below), whose sum is σ = 116563968. Its totient is φ = 31728000.

The previous prime is 66110021. The next prime is 66110087. The reversal of 66110055 is 55001166.

It is not a de Polignac number, because 66110055 - 2¹⁰ = 66109031 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14682 + ... + 18648.

It is an arithmetic number, because the mean of its divisors is an integer number (3642624).

Almost surely, 2^66110055 is an apocalyptic number.

66110055 is a deficient number, since it is larger than the sum of its proper divisors (50453913).

66110055 is a wasteful number, since it uses less digits than its factorization.

66110055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 66110055 is about 8130.8090003394. The cubic root of 66110055 is about 404.3485029145.

Subtracting from 66110055 its reverse (55001166), we obtain a square (11108889 = 3333²).

The spelling of 66110055 in words is "sixty-six million, one hundred ten thousand, fifty-five".