2660221573 has 8 divisors (see below), whose sum is σ = 2783088000. Its totient is φ = 2540116320.

The previous prime is 2660221547. The next prime is 2660221579. The reversal of 2660221573 is 3751220662.

2660221573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660221573 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 (2660221579) 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, 688323 + ... + 692176.

It is an arithmetic number, because the mean of its divisors is an integer number (347886000).

Almost surely, 2^2660221573 is an apocalyptic number.

It is an amenable number.

2660221573 is a deficient number, since it is larger than the sum of its proper divisors (122866427).

2660221573 is a wasteful number, since it uses less digits than its factorization.

2660221573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380587.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 2660221573 is about 51577.3358462804. The cubic root of 2660221573 is about 1385.6044528483.

The spelling of 2660221573 in words is "two billion, six hundred sixty million, two hundred twenty-one thousand, five hundred seventy-three".