2064606221 has 8 divisors (see below), whose sum is σ = 2095709304. Its totient is φ = 2033579520.

The previous prime is 2064606197. The next prime is 2064606223. The reversal of 2064606221 is 1226064602.

It can be written as a sum of positive squares in 4 ways, for example, as 629257225 + 1435348996 = 25085^2 + 37886^2 .

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-2064606221 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 (2064606223) 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, 36581 + ... + 73941.

It is an arithmetic number, because the mean of its divisors is an integer number (261963663).

Almost surely, 2^2064606221 is an apocalyptic number.

It is an amenable number.

2064606221 is a deficient number, since it is larger than the sum of its proper divisors (31103083).

2064606221 is an equidigital number, since it uses as much as digits as its factorization.

2064606221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38191.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2064606221 is about 45437.9381244352. The cubic root of 2064606221 is about 1273.3439930320.

The spelling of 2064606221 in words is "two billion, sixty-four million, six hundred six thousand, two hundred twenty-one".