2661331606 has 32 divisors (see below), whose sum is σ = 4287779712. Its totient is φ = 1234450560.

The previous prime is 2661331583. The next prime is 2661331643. The reversal of 2661331606 is 6061331662.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765885 + ... + 769351.

It is an arithmetic number, because the mean of its divisors is an integer number (133993116).

Almost surely, 2^2661331606 is an apocalyptic number.

2661331606 is a deficient number, since it is larger than the sum of its proper divisors (1626448106).

2661331606 is a wasteful number, since it uses less digits than its factorization.

2661331606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 2661331606 is about 51588.0955841558. The cubic root of 2661331606 is about 1385.7971501788.

The spelling of 2661331606 in words is "two billion, six hundred sixty-one million, three hundred thirty-one thousand, six hundred six".