5640497 has 8 divisors (see below), whose sum is σ = 5909760. Its totient is φ = 5373280.

The previous prime is 5640463. The next prime is 5640527. The reversal of 5640497 is 7940465.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5640497 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9629 + ... + 10197.

It is an arithmetic number, because the mean of its divisors is an integer number (738720).

Almost surely, 2^5640497 is an apocalyptic number.

It is an amenable number.

5640497 is a deficient number, since it is larger than the sum of its proper divisors (269263).

5640497 is a wasteful number, since it uses less digits than its factorization.

5640497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 5640497 is about 2374.9730524787. The cubic root of 5640497 is about 178.0078374700.

Subtracting 5640497 from its reverse (7940465), we obtain a cube (2299968 = 132³).

The spelling of 5640497 in words is "five million, six hundred forty thousand, four hundred ninety-seven".