2668066 has 8 divisors (see below), whose sum is σ = 4009644. Its totient is φ = 1331520.

The previous prime is 2668063. The next prime is 2668091. The reversal of 2668066 is 6608662.

It can be written as a sum of positive squares in 2 ways, for example, as 1625625 + 1042441 = 1275^2 + 1021^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2668063) 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, 646 + ... + 2398.

2^2668066 is an apocalyptic number.

2668066 is a deficient number, since it is larger than the sum of its proper divisors (1341578).

2668066 is a wasteful number, since it uses less digits than its factorization.

2668066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2668066 is about 1633.4215622429. The cubic root of 2668066 is about 138.6965067172.

It can be divided in two parts, 266 and 8066, that multiplied together give a triangular number (2145556 = T₂₀₇₁).

The spelling of 2668066 in words is "two million, six hundred sixty-eight thousand, sixty-six".