5640047 has 24 divisors (see below), whose sum is σ = 7004160. Its totient is φ = 4520880.

The previous prime is 5640043. The next prime is 5640059. The reversal of 5640047 is 7400465.

It is not a de Polignac number, because 5640047 - 2² = 5640043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5639998 and 5640025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71354 + ... + 71432.

It is an arithmetic number, because the mean of its divisors is an integer number (291840).

Almost surely, 2^5640047 is an apocalyptic number.

5640047 is a deficient number, since it is larger than the sum of its proper divisors (1364113).

5640047 is a wasteful number, since it uses less digits than its factorization.

5640047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 5640047 is about 2374.8783126720. The cubic root of 5640047 is about 178.0031035103.

The spelling of 5640047 in words is "five million, six hundred forty thousand, forty-seven".