2175680643 has 8 divisors (see below), whose sum is σ = 2926579728. Its totient is φ = 1437617664.

The previous prime is 2175680599. The next prime is 2175680651. The reversal of 2175680643 is 3460865712.

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

It is not a de Polignac number, because 2175680643 - 2⁹ = 2175680131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2175680595 and 2175680604.

It is not an unprimeable number, because it can be changed into a prime (2175610643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3208630 + ... + 3209307.

It is an arithmetic number, because the mean of its divisors is an integer number (365822466).

Almost surely, 2^2175680643 is an apocalyptic number.

2175680643 is a deficient number, since it is larger than the sum of its proper divisors (750899085).

2175680643 is a wasteful number, since it uses less digits than its factorization.

2175680643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6418053.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 2175680643 is about 46644.1919535541. The cubic root of 2175680643 is about 1295.7813232485.

The spelling of 2175680643 in words is "two billion, one hundred seventy-five million, six hundred eighty thousand, six hundred forty-three".