41640569 has 2 divisors, whose sum is σ = 41640570. Its totient is φ = 41640568.

The previous prime is 41640553. The next prime is 41640611. The reversal of 41640569 is 96504614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32718400 + 8922169 = 5720^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 41640569 - 2⁴ = 41640553 is a prime.

It is a super-2 number, since 2×41640569² = 3467873973287522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (41640509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820284 + 20820285.

It is an arithmetic number, because the mean of its divisors is an integer number (20820285).

Almost surely, 2^41640569 is an apocalyptic number.

It is an amenable number.

41640569 is a deficient number, since it is larger than the sum of its proper divisors (1).

41640569 is an equidigital number, since it uses as much as digits as its factorization.

41640569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 41640569 is about 6452.9504104712. The cubic root of 41640569 is about 346.6082416127.

The spelling of 41640569 in words is "forty-one million, six hundred forty thousand, five hundred sixty-nine".