5640471 has 12 divisors (see below), whose sum is σ = 8428680. Its totient is φ = 3630480.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640471 is 1740465.

It is not a de Polignac number, because 5640471 - 2³ = 5640463 is a prime.

It is a super-3 number, since 3×5640471³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 5 + 6⁷ + 4¹⁰ + 0 + 4¹¹ + 7⁶ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10545 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (702390).

Almost surely, 2^5640471 is an apocalyptic number.

5640471 is a deficient number, since it is larger than the sum of its proper divisors (2788209).

5640471 is a wasteful number, since it uses less digits than its factorization.

5640471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21646 (or 21643 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 5640471 is about 2374.9675787261. The cubic root of 5640471 is about 178.0075639592.

The spelling of 5640471 in words is "five million, six hundred forty thousand, four hundred seventy-one".