66133241 has 4 divisors (see below), whose sum is σ = 67381092. Its totient is φ = 64885392.

The previous prime is 66133219. The next prime is 66133279. The reversal of 66133241 is 14233166.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30085225 + 36048016 = 5485^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 66133241 - 2¹⁴ = 66116857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66133241.

It is not an unprimeable number, because it can be changed into a prime (66133741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623846 + ... + 623951.

It is an arithmetic number, because the mean of its divisors is an integer number (16845273).

Almost surely, 2^66133241 is an apocalyptic number.

It is an amenable number.

66133241 is a deficient number, since it is larger than the sum of its proper divisors (1247851).

66133241 is a wasteful number, since it uses less digits than its factorization.

66133241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247850.

The product of its digits is 2592, while the sum is 26.

The square root of 66133241 is about 8132.2346867266. The cubic root of 66133241 is about 404.3957681834.

The spelling of 66133241 in words is "sixty-six million, one hundred thirty-three thousand, two hundred forty-one".