66141266 has 4 divisors (see below), whose sum is σ = 99211902. Its totient is φ = 33070632.

The previous prime is 66141253. The next prime is 66141277. The reversal of 66141266 is 66214166.

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

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 450241 = 8105^2 + 671^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16535315 + ... + 16535318.

Almost surely, 2^66141266 is an apocalyptic number.

66141266 is a deficient number, since it is larger than the sum of its proper divisors (33070636).

66141266 is a wasteful number, since it uses less digits than its factorization.

66141266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33070635.

The product of its digits is 10368, while the sum is 32.

The square root of 66141266 is about 8132.7280785724. The cubic root of 66141266 is about 404.4121247828.

Subtracting 66141266 from its reverse (66214166), we obtain a square (72900 = 270²).

The spelling of 66141266 in words is "sixty-six million, one hundred forty-one thousand, two hundred sixty-six".