6416643 has 8 divisors (see below), whose sum is σ = 8568000. Its totient is φ = 4271528.

The previous prime is 6416629. The next prime is 6416653. The reversal of 6416643 is 3466146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6416643 - 2⁵ = 6416611 is a prime.

6416643 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6416643.

It is not an unprimeable number, because it can be changed into a prime (6416653) 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, 2008 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (1071000).

Almost surely, 2^6416643 is an apocalyptic number.

6416643 is a deficient number, since it is larger than the sum of its proper divisors (2151357).

6416643 is a wasteful number, since it uses less digits than its factorization.

6416643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121.

The product of its digits is 10368, while the sum is 30.

The square root of 6416643 is about 2533.1093541338. The cubic root of 6416643 is about 185.8243514643.

The spelling of 6416643 in words is "six million, four hundred sixteen thousand, six hundred forty-three".