5756666 has 4 divisors (see below), whose sum is σ = 8635002. Its totient is φ = 2878332.

The previous prime is 5756633. The next prime is 5756717. The reversal of 5756666 is 6666575.

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., 4141225 + 1615441 = 2035^2 + 1271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439165 + ... + 1439168.

Almost surely, 2^5756666 is an apocalyptic number.

5756666 is a deficient number, since it is larger than the sum of its proper divisors (2878336).

5756666 is a wasteful number, since it uses less digits than its factorization.

5756666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878335.

The product of its digits is 226800, while the sum is 41.

The square root of 5756666 is about 2399.3053161280. The cubic root of 5756666 is about 179.2215975311.

Subtracting 5756666 from its reverse (6666575), we obtain a palindrome (909909).

The spelling of 5756666 in words is "five million, seven hundred fifty-six thousand, six hundred sixty-six".