5640806 has 4 divisors (see below), whose sum is σ = 8461212. Its totient is φ = 2820402.

The previous prime is 5640781. The next prime is 5640823. The reversal of 5640806 is 6080465.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410200 + ... + 1410203.

It is an arithmetic number, because the mean of its divisors is an integer number (2115303).

Almost surely, 2^5640806 is an apocalyptic number.

5640806 is a deficient number, since it is larger than the sum of its proper divisors (2820406).

5640806 is a wasteful number, since it uses less digits than its factorization.

5640806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820405.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 5640806 is about 2375.0381049575. The cubic root of 5640806 is about 178.0110879765.

It can be divided in two parts, 5640 and 806, that added together give a palindrome (6446).

The spelling of 5640806 in words is "five million, six hundred forty thousand, eight hundred six".