66038041 has 4 divisors (see below), whose sum is σ = 66104500. Its totient is φ = 65971584.

The previous prime is 66038033. The next prime is 66038057. The reversal of 66038041 is 14083066.

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 31404816 + 34633225 = 5604^2 + 5885^2 .

It is a cyclic number.

It is not a de Polignac number, because 66038041 - 2³ = 66038033 is a prime.

It is a super-2 number, since 2×66038041² = 8722045718235362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66038341) 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, 31716 + ... + 33733.

It is an arithmetic number, because the mean of its divisors is an integer number (16526125).

Almost surely, 2^66038041 is an apocalyptic number.

It is an amenable number.

66038041 is a deficient number, since it is larger than the sum of its proper divisors (66459).

66038041 is a wasteful number, since it uses less digits than its factorization.

66038041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66458.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 66038041 is about 8126.3793290739. The cubic root of 66038041 is about 404.2016299839.

The spelling of 66038041 in words is "sixty-six million, thirty-eight thousand, forty-one".