5642647 has 4 divisors (see below), whose sum is σ = 5653960. Its totient is φ = 5631336.

The previous prime is 5642641. The next prime is 5642653. The reversal of 5642647 is 7462465.

5642647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (5642641) and next prime (5642653).

It is a cyclic number.

It is not a de Polignac number, because 5642647 - 2¹¹ = 5640599 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 (5642641) 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, 4872 + ... + 5917.

It is an arithmetic number, because the mean of its divisors is an integer number (1413490).

Almost surely, 2^5642647 is an apocalyptic number.

5642647 is a deficient number, since it is larger than the sum of its proper divisors (11313).

5642647 is a wasteful number, since it uses less digits than its factorization.

5642647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11312.

The product of its digits is 40320, while the sum is 34.

The square root of 5642647 is about 2375.4256460685. The cubic root of 5642647 is about 178.0304518031.

The spelling of 5642647 in words is "five million, six hundred forty-two thousand, six hundred forty-seven".