2180643 has 8 divisors (see below), whose sum is σ = 2917968. Its totient is φ = 1448544.

The previous prime is 2180627. The next prime is 2180677. The reversal of 2180643 is 3460812.

It is a happy number.

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

It is not a de Polignac number, because 2180643 - 2⁴ = 2180627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2180603) 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, 196 + ... + 2097.

It is an arithmetic number, because the mean of its divisors is an integer number (364746).

2^2180643 is an apocalyptic number.

2180643 is a deficient number, since it is larger than the sum of its proper divisors (737325).

2180643 is a wasteful number, since it uses less digits than its factorization.

2180643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2180643 is about 1476.7000372452. The cubic root of 2180643 is about 129.6765727378.

The spelling of 2180643 in words is "two million, one hundred eighty thousand, six hundred forty-three".