2546666 has 4 divisors (see below), whose sum is σ = 3820002. Its totient is φ = 1273332.

The previous prime is 2546659. The next prime is 2546669. The reversal of 2546666 is 6666452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1615441 + 931225 = 1271^2 + 965^2 .

2546666 is a modest number, since divided by 6666 gives 254 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2546669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636665 + ... + 636668.

2^2546666 is an apocalyptic number.

2546666 is a deficient number, since it is larger than the sum of its proper divisors (1273336).

2546666 is a wasteful number, since it uses less digits than its factorization.

2546666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273335.

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

The square root of 2546666 is about 1595.8276849334. The cubic root of 2546666 is about 136.5601536408.

The spelling of 2546666 in words is "two million, five hundred forty-six thousand, six hundred sixty-six".