41661623 has 4 divisors (see below), whose sum is σ = 43854360. Its totient is φ = 39468888.

The previous prime is 41661619. The next prime is 41661629. The reversal of 41661623 is 32616614.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41661623 - 2² = 41661619 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 (41661629) 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, 1096340 + ... + 1096377.

It is an arithmetic number, because the mean of its divisors is an integer number (10963590).

Almost surely, 2^41661623 is an apocalyptic number.

41661623 is a deficient number, since it is larger than the sum of its proper divisors (2192737).

41661623 is a wasteful number, since it uses less digits than its factorization.

41661623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192736.

The product of its digits is 5184, while the sum is 29.

The square root of 41661623 is about 6454.5815511155. The cubic root of 41661623 is about 346.6666482783. Note that the first 4 decimals are identical.

The spelling of 41661623 in words is "forty-one million, six hundred sixty-one thousand, six hundred twenty-three".