4566691 has 4 divisors (see below), whose sum is σ = 4578592. Its totient is φ = 4554792.

The previous prime is 4566689. The next prime is 4566713. The reversal of 4566691 is 1966654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1966654 = 2 ⋅983327.

It is a cyclic number.

It is not a de Polignac number, because 4566691 - 2¹ = 4566689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4566691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4566671) 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, 5355 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (1144648).

Almost surely, 2^4566691 is an apocalyptic number.

4566691 is a deficient number, since it is larger than the sum of its proper divisors (11901).

4566691 is a wasteful number, since it uses less digits than its factorization.

4566691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900.

The product of its digits is 38880, while the sum is 37.

The square root of 4566691 is about 2136.9817500391. The cubic root of 4566691 is about 165.9079544871.

Subtracting from 4566691 its sum of digits (37), we obtain a palindrome (4566654).

The spelling of 4566691 in words is "four million, five hundred sixty-six thousand, six hundred ninety-one".