41621661 has 16 divisors (see below), whose sum is σ = 65289600. Its totient is φ = 26115264.

The previous prime is 41621653. The next prime is 41621663. The reversal of 41621661 is 16612614.

It is not a de Polignac number, because 41621661 - 2³ = 41621653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41621663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44881 + ... + 45798.

It is an arithmetic number, because the mean of its divisors is an integer number (4080600).

Almost surely, 2^41621661 is an apocalyptic number.

It is an amenable number.

41621661 is a deficient number, since it is larger than the sum of its proper divisors (23667939).

41621661 is a wasteful number, since it uses less digits than its factorization.

41621661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90705 (or 90699 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 41621661 is about 6451.4851778486. The cubic root of 41621661 is about 346.5557714616. Note that the first 3 decimals are identical.

The spelling of 41621661 in words is "forty-one million, six hundred twenty-one thousand, six hundred sixty-one".