5640499 has 4 divisors (see below), whose sum is σ = 5665360. Its totient is φ = 5615640.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640499 is 9940465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5640499 - 2¹⁵ = 5607731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5640409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12087 + ... + 12544.

It is an arithmetic number, because the mean of its divisors is an integer number (1416340).

Almost surely, 2^5640499 is an apocalyptic number.

5640499 is a deficient number, since it is larger than the sum of its proper divisors (24861).

5640499 is a wasteful number, since it uses less digits than its factorization.

5640499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24860.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 5640499 is about 2374.9734735361. The cubic root of 5640499 is about 178.0078585093.

The spelling of 5640499 in words is "five million, six hundred forty thousand, four hundred ninety-nine".