5656647 has 8 divisors (see below), whose sum is σ = 7726320. Its totient is φ = 3679040.

The previous prime is 5656621. The next prime is 5656649. The reversal of 5656647 is 7466565.

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 5656647 - 2¹⁰ = 5655623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656649) 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, 22872 + ... + 23117.

It is an arithmetic number, because the mean of its divisors is an integer number (965790).

Almost surely, 2^5656647 is an apocalyptic number.

5656647 is a deficient number, since it is larger than the sum of its proper divisors (2069673).

5656647 is a wasteful number, since it uses less digits than its factorization.

5656647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46033.

The product of its digits is 151200, while the sum is 39.

The square root of 5656647 is about 2378.3706607676. The cubic root of 5656647 is about 178.1775676182.

The spelling of 5656647 in words is "five million, six hundred fifty-six thousand, six hundred forty-seven".