2666776662 has 64 divisors (see below), whose sum is σ = 6502533120. Its totient is φ = 803412000.

The previous prime is 2666776649. The next prime is 2666776703.

2666776662 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2666776662² = 14223395529975724488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2666776599 and 2666776608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89787 + ... + 115737.

It is an arithmetic number, because the mean of its divisors is an integer number (101602080).

Almost surely, 2^2666776662 is an apocalyptic number.

2666776662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2666776662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3251266560).

2666776662 is an abundant number, since it is smaller than the sum of its proper divisors (3835756458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666776662 is a wasteful number, since it uses less digits than its factorization.

2666776662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26146 (or 26140 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 54.

The square root of 2666776662 is about 51640.8429636852. The cubic root of 2666776662 is about 1386.7416150652.

The spelling of 2666776662 in words is "two billion, six hundred sixty-six million, seven hundred seventy-six thousand, six hundred sixty-two".