41646681 has 6 divisors (see below), whose sum is σ = 60156330. Its totient is φ = 27764448.

The previous prime is 41646679. The next prime is 41646691. The reversal of 41646681 is 18664614.

41646681 is a `hidden beast` number, since 4 + 1 + 646 + 6 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 31304025 + 10342656 = 5595^2 + 3216^2 .

It is not a de Polignac number, because 41646681 - 2¹ = 41646679 is a prime.

It is a super-2 number, since 2×41646681² = 3468892076631522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (41646601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2313696 + ... + 2313713.

It is an arithmetic number, because the mean of its divisors is an integer number (10026055).

Almost surely, 2^41646681 is an apocalyptic number.

It is an amenable number.

41646681 is a deficient number, since it is larger than the sum of its proper divisors (18509649).

41646681 is a wasteful number, since it uses less digits than its factorization.

41646681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627415 (or 4627412 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 41646681 is about 6453.4239749144. The cubic root of 41646681 is about 346.6251991614.

The spelling of 41646681 in words is "forty-one million, six hundred forty-six thousand, six hundred eighty-one".