6641471 has 6 divisors (see below), whose sum is σ = 6863616. Its totient is φ = 6426300.

The previous prime is 6641449. The next prime is 6641473. The reversal of 6641471 is 1741466.

It is not a de Polignac number, because 6641471 - 2¹⁸ = 6379327 is a prime.

It is a super-3 number, since 3×6641471³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641473) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2495 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (1143936).

Almost surely, 2^6641471 is an apocalyptic number.

6641471 is a deficient number, since it is larger than the sum of its proper divisors (222145).

6641471 is an equidigital number, since it uses as much as digits as its factorization.

6641471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973 (or 6942 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 6641471 is about 2577.1051588944. The cubic root of 6641471 is about 187.9698061514.

The spelling of 6641471 in words is "six million, six hundred forty-one thousand, four hundred seventy-one".