2646221059 has 4 divisors (see below), whose sum is σ = 2646495504. Its totient is φ = 2645946616.

The previous prime is 2646221041. The next prime is 2646221063. The reversal of 2646221059 is 9501226462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2646221059 - 2⁹ = 2646220547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2646221009) 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, 122212 + ... + 142225.

It is an arithmetic number, because the mean of its divisors is an integer number (661623876).

Almost surely, 2^2646221059 is an apocalyptic number.

2646221059 is a deficient number, since it is larger than the sum of its proper divisors (274445).

2646221059 is a wasteful number, since it uses less digits than its factorization.

2646221059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274444.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 2646221059 is about 51441.4332906850. The cubic root of 2646221059 is about 1383.1694042485.

The spelling of 2646221059 in words is "two billion, six hundred forty-six million, two hundred twenty-one thousand, fifty-nine".