2666654 has 16 divisors (see below), whose sum is σ = 4280688. Its totient is φ = 1241472.

The previous prime is 2666647. The next prime is 2666659. The reversal of 2666654 is 4566662.

It is a super-2 number, since 2×2666654² = 14222087111432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666659) 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, 3272 + ... + 4004.

It is an arithmetic number, because the mean of its divisors is an integer number (267543).

2^2666654 is an apocalyptic number.

2666654 is a deficient number, since it is larger than the sum of its proper divisors (1614034).

2666654 is a wasteful number, since it uses less digits than its factorization.

2666654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its digits is 51840, while the sum is 35.

The square root of 2666654 is about 1632.9892834921. The cubic root of 2666654 is about 138.6720353054.

Adding to 2666654 its sum of digits (35), we get a square (2666689 = 1633²).

The spelling of 2666654 in words is "two million, six hundred sixty-six thousand, six hundred fifty-four".