41645623 has 2 divisors, whose sum is σ = 41645624. Its totient is φ = 41645622.

The previous prime is 41645621. The next prime is 41645677. The reversal of 41645623 is 32654614.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41645623 - 2¹ = 41645621 is a prime.

Together with 41645621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41645621) 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 as a sum of consecutive naturals, namely, 20822811 + 20822812.

It is an arithmetic number, because the mean of its divisors is an integer number (20822812).

Almost surely, 2^41645623 is an apocalyptic number.

41645623 is a deficient number, since it is larger than the sum of its proper divisors (1).

41645623 is an equidigital number, since it uses as much as digits as its factorization.

41645623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 41645623 is about 6453.3420024046. The cubic root of 41645623 is about 346.6222638930.

The spelling of 41645623 in words is "forty-one million, six hundred forty-five thousand, six hundred twenty-three".