5640890 has 8 divisors (see below), whose sum is σ = 10153620. Its totient is φ = 2256352.

The previous prime is 5640883. The next prime is 5640917. The reversal of 5640890 is 980465.

It can be written as a sum of positive squares in 2 ways, for example, as 5583769 + 57121 = 2363^2 + 239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 282035 + ... + 282054.

Almost surely, 2^5640890 is an apocalyptic number.

5640890 is a deficient number, since it is larger than the sum of its proper divisors (4512730).

5640890 is a wasteful number, since it uses less digits than its factorization.

5640890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564096.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 5640890 is about 2375.0557888184. The cubic root of 5640890 is about 178.0119715889.

The spelling of 5640890 in words is "five million, six hundred forty thousand, eight hundred ninety".