6666744041 has 4 divisors (see below), whose sum is σ = 6706664832. Its totient is φ = 6626823252.

The previous prime is 6666744023. The next prime is 6666744043. The reversal of 6666744041 is 1404476666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1404476666 = 2 ⋅702238333.

It is a cyclic number.

It is not a de Polignac number, because 6666744041 - 2⁶ = 6666743977 is a prime.

It is a super-2 number, since 2×6666744041² = 88890952216418019362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6666743983 and 6666744001.

It is not an unprimeable number, because it can be changed into a prime (6666744043) 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, 19960145 + ... + 19960478.

It is an arithmetic number, because the mean of its divisors is an integer number (1676666208).

Almost surely, 2^6666744041 is an apocalyptic number.

It is an amenable number.

6666744041 is a deficient number, since it is larger than the sum of its proper divisors (39920791).

6666744041 is a wasteful number, since it uses less digits than its factorization.

6666744041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39920790.

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 6666744041 is about 81650.1319104874. The cubic root of 6666744041 is about 1882.0793389374.

The spelling of 6666744041 in words is "six billion, six hundred sixty-six million, seven hundred forty-four thousand, forty-one".