2006446261 has 4 divisors (see below), whose sum is σ = 2027131372. Its totient is φ = 1985761152.

The previous prime is 2006446259. The next prime is 2006446279. The reversal of 2006446261 is 1626446002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1626446002 = 2 ⋅813223001.

It can be written as a sum of positive squares in 2 ways, for example, as 324216036 + 1682230225 = 18006^2 + 41015^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006446261 - 2¹ = 2006446259 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 (2006446231) 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, 10342410 + ... + 10342603.

It is an arithmetic number, because the mean of its divisors is an integer number (506782843).

Almost surely, 2^2006446261 is an apocalyptic number.

It is an amenable number.

2006446261 is a deficient number, since it is larger than the sum of its proper divisors (20685111).

2006446261 is an equidigital number, since it uses as much as digits as its factorization.

2006446261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20685110.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 2006446261 is about 44793.3729585080. The cubic root of 2006446261 is about 1261.2732281726.

The spelling of 2006446261 in words is "two billion, six million, four hundred forty-six thousand, two hundred sixty-one".