2666489 has 8 divisors (see below), whose sum is σ = 3067008. Its totient is φ = 2270880.

The previous prime is 2666453. The next prime is 2666491. The reversal of 2666489 is 9846662.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666489 is a prime.

It is a super-2 number, since 2×2666489² = 14220327174242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2666429) 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, 29 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (383376).

2^2666489 is an apocalyptic number.

It is an amenable number.

2666489 is a deficient number, since it is larger than the sum of its proper divisors (400519).

2666489 is a wasteful number, since it uses less digits than its factorization.

2666489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its digits is 124416, while the sum is 41.

The square root of 2666489 is about 1632.9387618646. The cubic root of 2666489 is about 138.6691751221.

The spelling of 2666489 in words is "two million, six hundred sixty-six thousand, four hundred eighty-nine".