41663669 has 2 divisors, whose sum is σ = 41663670. Its totient is φ = 41663668.

The previous prime is 41663663. The next prime is 41663681. The reversal of 41663669 is 96636614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32890225 + 8773444 = 5735^2 + 2962^2 .

It is a cyclic number.

It is not a de Polignac number, because 41663669 - 2⁴ = 41663653 is a prime.

It is a super-2 number, since 2×41663669² = 3471722629083122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41663663) 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, 20831834 + 20831835.

It is an arithmetic number, because the mean of its divisors is an integer number (20831835).

Almost surely, 2^41663669 is an apocalyptic number.

It is an amenable number.

41663669 is a deficient number, since it is larger than the sum of its proper divisors (1).

41663669 is an equidigital number, since it uses as much as digits as its factorization.

41663669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 41663669 is about 6454.7400412410. The cubic root of 41663669 is about 346.6723231120.

The spelling of 41663669 in words is "forty-one million, six hundred sixty-three thousand, six hundred sixty-nine".