2175670641 has 4 divisors (see below), whose sum is σ = 2900894192. Its totient is φ = 1450447092.

The previous prime is 2175670619. The next prime is 2175670643. The reversal of 2175670641 is 1460765712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2175670641 - 2⁹ = 2175670129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2175670641.

It is not an unprimeable number, because it can be changed into a prime (2175670643) 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, 362611771 + ... + 362611776.

It is an arithmetic number, because the mean of its divisors is an integer number (725223548).

Almost surely, 2^2175670641 is an apocalyptic number.

It is an amenable number.

2175670641 is a deficient number, since it is larger than the sum of its proper divisors (725223551).

2175670641 is an equidigital number, since it uses as much as digits as its factorization.

2175670641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725223550.

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 2175670641 is about 46644.0847375099. The cubic root of 2175670641 is about 1295.7793375979.

The spelling of 2175670641 in words is "two billion, one hundred seventy-five million, six hundred seventy thousand, six hundred forty-one".