5666791 has 4 divisors (see below), whose sum is σ = 6102712. Its totient is φ = 5230872.

The previous prime is 5666789. The next prime is 5666819. The reversal of 5666791 is 1976665.

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

It is a cyclic number.

It is not a de Polignac number, because 5666791 - 2¹ = 5666789 is a prime.

It is a super-2 number, since 2×5666791² = 64225040475362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5666701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217941 + ... + 217966.

It is an arithmetic number, because the mean of its divisors is an integer number (1525678).

Almost surely, 2^5666791 is an apocalyptic number.

5666791 is a deficient number, since it is larger than the sum of its proper divisors (435921).

5666791 is a wasteful number, since it uses less digits than its factorization.

5666791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435920.

The product of its digits is 68040, while the sum is 40.

The square root of 5666791 is about 2380.5022579279. The cubic root of 5666791 is about 178.2840119426.

The spelling of 5666791 in words is "five million, six hundred sixty-six thousand, seven hundred ninety-one".