2666553 has 8 divisors (see below), whose sum is σ = 3651648. Its totient is φ = 1729584.

The previous prime is 2666539. The next prime is 2666561. The reversal of 2666553 is 3556662.

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

It is not a de Polignac number, because 2666553 - 2⁴ = 2666537 is a prime.

It is a super-2 number, since 2×2666553² = 14221009803618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666513) 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, 11901 + ... + 12122.

It is an arithmetic number, because the mean of its divisors is an integer number (456456).

2^2666553 is an apocalyptic number.

It is an amenable number.

2666553 is a deficient number, since it is larger than the sum of its proper divisors (985095).

2666553 is a wasteful number, since it uses less digits than its factorization.

2666553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24063.

The product of its digits is 32400, while the sum is 33.

The square root of 2666553 is about 1632.9583583178. The cubic root of 2666553 is about 138.6702845405.

The spelling of 2666553 in words is "two million, six hundred sixty-six thousand, five hundred fifty-three".