66230055 has 40 divisors (see below), whose sum is σ = 122839200. Its totient is φ = 34098624.

The previous prime is 66230051. The next prime is 66230069. The reversal of 66230055 is 55003266.

It is not a de Polignac number, because 66230055 - 2² = 66230051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66230051) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8926 + ... + 14564.

It is an arithmetic number, because the mean of its divisors is an integer number (3070980).

Almost surely, 2^66230055 is an apocalyptic number.

66230055 is a deficient number, since it is larger than the sum of its proper divisors (56609145).

66230055 is a wasteful number, since it uses less digits than its factorization.

66230055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685 (or 5676 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 66230055 is about 8138.1849942109. The cubic root of 66230055 is about 404.5930067786.

The spelling of 66230055 in words is "sixty-six million, two hundred thirty thousand, fifty-five".