66041201 has 4 divisors (see below), whose sum is σ = 67652004. Its totient is φ = 64430400.

The previous prime is 66041179. The next prime is 66041203. The reversal of 66041201 is 10214066.

It is a happy number.

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 39250225 + 26790976 = 6265^2 + 5176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66041201 is a prime.

It is a super-2 number, since 2×66041201² = 8722880459044802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66041203) 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, 805340 + ... + 805421.

It is an arithmetic number, because the mean of its divisors is an integer number (16913001).

Almost surely, 2^66041201 is an apocalyptic number.

It is an amenable number.

66041201 is a deficient number, since it is larger than the sum of its proper divisors (1610803).

66041201 is a wasteful number, since it uses less digits than its factorization.

66041201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610802.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 66041201 is about 8126.5737552797. The cubic root of 66041201 is about 404.2080770598.

Adding to 66041201 its reverse (10214066), we get a palindrome (76255267).

The spelling of 66041201 in words is "sixty-six million, forty-one thousand, two hundred one".