41166661 has 4 divisors (see below), whose sum is σ = 41260032. Its totient is φ = 41073292.

The previous prime is 41166647. The next prime is 41166701. The reversal of 41166661 is 16666114.

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.

It is a cyclic number.

It is not a de Polignac number, because 41166661 - 2¹⁹ = 40642373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41166641) 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, 46021 + ... + 46906.

It is an arithmetic number, because the mean of its divisors is an integer number (10315008).

Almost surely, 2^41166661 is an apocalyptic number.

It is an amenable number.

41166661 is a deficient number, since it is larger than the sum of its proper divisors (93371).

41166661 is an equidigital number, since it uses as much as digits as its factorization.

41166661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93370.

The product of its digits is 5184, while the sum is 31.

The square root of 41166661 is about 6416.1250767110. The cubic root of 41166661 is about 345.2883146155.

The spelling of 41166661 in words is "forty-one million, one hundred sixty-six thousand, six hundred sixty-one".