2666366061 has 16 divisors (see below), whose sum is σ = 3567083520. Its totient is φ = 1771625520.

The previous prime is 2666365993. The next prime is 2666366069. The reversal of 2666366061 is 1606636662.

It is a happy number.

It is not a de Polignac number, because 2666366061 - 2¹⁸ = 2666103917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666366069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1602516 + ... + 1604178.

It is an arithmetic number, because the mean of its divisors is an integer number (222942720).

Almost surely, 2^2666366061 is an apocalyptic number.

It is an amenable number.

2666366061 is a deficient number, since it is larger than the sum of its proper divisors (900717459).

2666366061 is a wasteful number, since it uses less digits than its factorization.

2666366061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 2666366061 is about 51636.8672655497. The cubic root of 2666366061 is about 1386.6704396612.

The spelling of 2666366061 in words is "two billion, six hundred sixty-six million, three hundred sixty-six thousand, sixty-one".