5640427 has 8 divisors (see below), whose sum is σ = 6120576. Its totient is φ = 5166912.

The previous prime is 5640409. The next prime is 5640449. The reversal of 5640427 is 7240465.

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 5640427 - 2¹¹ = 5638379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5640395 and 5640404.

It is not an unprimeable number, because it can be changed into a prime (5640457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198 + ... + 3364.

It is an arithmetic number, because the mean of its divisors is an integer number (765072).

Almost surely, 2^5640427 is an apocalyptic number.

5640427 is a deficient number, since it is larger than the sum of its proper divisors (480149).

5640427 is a wasteful number, since it uses less digits than its factorization.

5640427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 5640427 is about 2374.9583154237. The cubic root of 5640427 is about 178.0071010928.

The spelling of 5640427 in words is "five million, six hundred forty thousand, four hundred twenty-seven".