6441691 has 8 divisors (see below), whose sum is σ = 6864480. Its totient is φ = 6023808.

The previous prime is 6441653. The next prime is 6441697. The reversal of 6441691 is 1961446.

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 6441691 - 2⁷ = 6441563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6441697) 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, 1705 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (858060).

Almost surely, 2^6441691 is an apocalyptic number.

6441691 is a deficient number, since it is larger than the sum of its proper divisors (422789).

6441691 is a wasteful number, since it uses less digits than its factorization.

6441691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453.

The product of its digits is 5184, while the sum is 31.

The square root of 6441691 is about 2538.0486598960. The cubic root of 6441691 is about 186.0658320944.

The spelling of 6441691 in words is "six million, four hundred forty-one thousand, six hundred ninety-one".