41665563 has 8 divisors (see below), whose sum is σ = 61726800. Its totient is φ = 27777024.

The previous prime is 41665541. The next prime is 41665567. The reversal of 41665563 is 36556614.

41665563 is a `hidden beast` number, since 41 + 66 + 556 + 3 = 666.

It is not a de Polignac number, because 41665563 - 2⁵ = 41665531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41665567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 771558 + ... + 771611.

It is an arithmetic number, because the mean of its divisors is an integer number (7715850).

Almost surely, 2^41665563 is an apocalyptic number.

41665563 is a deficient number, since it is larger than the sum of its proper divisors (20061237).

41665563 is a wasteful number, since it uses less digits than its factorization.

41665563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543178 (or 1543172 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 41665563 is about 6454.8867534605. The cubic root of 41665563 is about 346.6775761894.

The spelling of 41665563 in words is "forty-one million, six hundred sixty-five thousand, five hundred sixty-three".