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BaseRepresentation
bin101001101010
310122202
4221222
541131
620202
710526
oct5152
93582
102666
112004
121662
1312a1
14d86
15bcb
hexa6a

2666 has 8 divisors (see below), whose sum is σ = 4224. Its totient is φ = 1260.

The previous prime is 2663. The next prime is 2671. The reversal of 2666 is 6662.

2666 = 92 + 102 + ... + 202.

2666 is nontrivially palindromic in base 6, base 15 and base 16.

2666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2666 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

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

2666 is an undulating number in base 6, base 15 and base 16.

2666 is a modest number, since divided by 66 gives 26 as remainder.

It is a Curzon number.

It is a plaindrome in base 10.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (2663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41 + ... + 83.

It is an arithmetic number, because the mean of its divisors is an integer number (528).

2666 is a deficient number, since it is larger than the sum of its proper divisors (1558).

2666 is a wasteful number, since it uses less digits than its factorization.

2666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76.

The product of its digits is 432, while the sum is 20.

The square root of 2666 is about 51.6333225737. The cubic root of 2666 is about 13.8660697886.

It can be divided in two parts, 266 and 6, that multiplied together give a triangular number (1596 = T56).

The spelling of 2666 in words is "two thousand, six hundred sixty-six".

Divisors: 1 2 31 43 62 86 1333 2666