41646643 has 4 divisors (see below), whose sum is σ = 42059088. Its totient is φ = 41234200.

The previous prime is 41646641. The next prime is 41646679. The reversal of 41646643 is 34664614.

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 41646643 - 2¹ = 41646641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 41646599 and 41646608.

It is not an unprimeable number, because it can be changed into a prime (41646641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206071 + ... + 206272.

It is an arithmetic number, because the mean of its divisors is an integer number (10514772).

Almost surely, 2^41646643 is an apocalyptic number.

41646643 is a deficient number, since it is larger than the sum of its proper divisors (412445).

41646643 is a wasteful number, since it uses less digits than its factorization.

41646643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412444.

The product of its digits is 41472, while the sum is 34.

The square root of 41646643 is about 6453.4210307402. The cubic root of 41646643 is about 346.6250937368.

The spelling of 41646643 in words is "forty-one million, six hundred forty-six thousand, six hundred forty-three".