2140643 has 8 divisors (see below), whose sum is σ = 2227200. Its totient is φ = 2055240.

The previous prime is 2140637. The next prime is 2140681. The reversal of 2140643 is 3460412.

It is a happy number.

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 2140643 - 2⁴ = 2140627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140603) 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, 5996 + ... + 6342.

It is an arithmetic number, because the mean of its divisors is an integer number (278400).

2^2140643 is an apocalyptic number.

2140643 is a deficient number, since it is larger than the sum of its proper divisors (86557).

2140643 is a wasteful number, since it uses less digits than its factorization.

2140643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2140643 is about 1463.0936402022. The cubic root of 2140643 is about 128.8787796217.

The spelling of 2140643 in words is "two million, one hundred forty thousand, six hundred forty-three".