2006577161 has 4 divisors (see below), whose sum is σ = 2006754324. Its totient is φ = 2006400000.

The previous prime is 2006577151. The next prime is 2006577163. The reversal of 2006577161 is 1617756002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1617756002 = 2 ⋅808878001.

It can be written as a sum of positive squares in 2 ways, for example, as 291043600 + 1715533561 = 17060^2 + 41419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006577161 - 2¹⁰ = 2006576137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2006577163) 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, 70340 + ... + 94661.

It is an arithmetic number, because the mean of its divisors is an integer number (501688581).

Almost surely, 2^2006577161 is an apocalyptic number.

It is an amenable number.

2006577161 is a deficient number, since it is larger than the sum of its proper divisors (177163).

2006577161 is a wasteful number, since it uses less digits than its factorization.

2006577161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177162.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 2006577161 is about 44794.8340883187. The cubic root of 2006577161 is about 1261.3006559485.

The spelling of 2006577161 in words is "two billion, six million, five hundred seventy-seven thousand, one hundred sixty-one".