66226955 has 4 divisors (see below), whose sum is σ = 79472352. Its totient is φ = 52981560.

The previous prime is 66226949. The next prime is 66226999. The reversal of 66226955 is 55962266.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66226955 - 2⁶ = 66226891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622691 + ... + 6622700.

It is an arithmetic number, because the mean of its divisors is an integer number (19868088).

Almost surely, 2^66226955 is an apocalyptic number.

66226955 is a deficient number, since it is larger than the sum of its proper divisors (13245397).

66226955 is a wasteful number, since it uses less digits than its factorization.

66226955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13245396.

The product of its digits is 194400, while the sum is 41.

The square root of 66226955 is about 8137.9945318242. The cubic root of 66226955 is about 404.5866941466.

The spelling of 66226955 in words is "sixty-six million, two hundred twenty-six thousand, nine hundred fifty-five".