2666841663 has 8 divisors (see below), whose sum is σ = 3764953008. Its totient is φ = 1673312384.

The previous prime is 2666841649. The next prime is 2666841719. The reversal of 2666841663 is 3661486662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2666841663 - 2¹⁶ = 2666776127 is a prime.

It is a super-2 number, since 2×2666841663² = 14224088911025211138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666841623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26145456 + ... + 26145557.

It is an arithmetic number, because the mean of its divisors is an integer number (470619126).

Almost surely, 2^2666841663 is an apocalyptic number.

2666841663 is a deficient number, since it is larger than the sum of its proper divisors (1098111345).

2666841663 is a wasteful number, since it uses less digits than its factorization.

2666841663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52291033.

The product of its digits is 1492992, while the sum is 48.

The square root of 2666841663 is about 51641.4723163467. The cubic root of 2666841663 is about 1386.7528819579.

The spelling of 2666841663 in words is "two billion, six hundred sixty-six million, eight hundred forty-one thousand, six hundred sixty-three".