41613661 has 4 divisors (see below), whose sum is σ = 41669824. Its totient is φ = 41557500.

The previous prime is 41613643. The next prime is 41613683. The reversal of 41613661 is 16631614.

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: 16631614 = 2 ⋅8315807.

It is a cyclic number.

It is not a de Polignac number, because 41613661 - 2¹⁷ = 41482589 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 (41617661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26955 + ... + 28456.

It is an arithmetic number, because the mean of its divisors is an integer number (10417456).

Almost surely, 2^41613661 is an apocalyptic number.

It is an amenable number.

41613661 is a deficient number, since it is larger than the sum of its proper divisors (56163).

41613661 is an equidigital number, since it uses as much as digits as its factorization.

41613661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56162.

The product of its digits is 2592, while the sum is 28.

The square root of 41613661 is about 6450.8651357783. The cubic root of 41613661 is about 346.5335664867.

The spelling of 41613661 in words is "forty-one million, six hundred thirteen thousand, six hundred sixty-one".