41664881 has 2 divisors, whose sum is σ = 41664882. Its totient is φ = 41664880.

The previous prime is 41664877. The next prime is 41664901. The reversal of 41664881 is 18846614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 512656 = 6415^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 41664881 - 2² = 41664877 is a prime.

It is a super-2 number, since 2×41664881² = 3471924617488322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41664811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832440 + 20832441.

It is an arithmetic number, because the mean of its divisors is an integer number (20832441).

Almost surely, 2^41664881 is an apocalyptic number.

It is an amenable number.

41664881 is a deficient number, since it is larger than the sum of its proper divisors (1).

41664881 is an equidigital number, since it uses as much as digits as its factorization.

41664881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 41664881 is about 6454.8339250518. The cubic root of 41664881 is about 346.6756846561.

The spelling of 41664881 in words is "forty-one million, six hundred sixty-four thousand, eight hundred eighty-one".