2661664006 has 16 divisors (see below), whose sum is σ = 4189112928. Its totient is φ = 1265932800.

The previous prime is 2661663997. The next prime is 2661664013. The reversal of 2661664006 is 6004661662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151515 + ... + 168166.

It is an arithmetic number, because the mean of its divisors is an integer number (261819558).

Almost surely, 2^2661664006 is an apocalyptic number.

2661664006 is a deficient number, since it is larger than the sum of its proper divisors (1527448922).

2661664006 is a wasteful number, since it uses less digits than its factorization.

2661664006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319887.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 2661664006 is about 51591.3171570566. The cubic root of 2661664006 is about 1385.8548430765.

The spelling of 2661664006 in words is "two billion, six hundred sixty-one million, six hundred sixty-four thousand, six".