5647643 has 4 divisors (see below), whose sum is σ = 5800320. Its totient is φ = 5494968.

The previous prime is 5647639. The next prime is 5647651. The reversal of 5647643 is 3467465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3467465 = 5 ⋅693493.

It is a cyclic number.

It is not a de Polignac number, because 5647643 - 2² = 5647639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5647613) 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, 76283 + ... + 76356.

It is an arithmetic number, because the mean of its divisors is an integer number (1450080).

Almost surely, 2^5647643 is an apocalyptic number.

5647643 is a deficient number, since it is larger than the sum of its proper divisors (152677).

5647643 is a wasteful number, since it uses less digits than its factorization.

5647643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152676.

The product of its digits is 60480, while the sum is 35.

The square root of 5647643 is about 2376.4770144060. The cubic root of 5647643 is about 178.0829790279.

The spelling of 5647643 in words is "five million, six hundred forty-seven thousand, six hundred forty-three".