4516681 has 4 divisors (see below), whose sum is σ = 4864132. Its totient is φ = 4169232.

The previous prime is 4516651. The next prime is 4516691. The reversal of 4516681 is 1866154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1334025 + 3182656 = 1155^2 + 1784^2 .

It is a cyclic number.

It is not a de Polignac number, because 4516681 - 2⁵ = 4516649 is a prime.

It is a super-2 number, since 2×4516681² = 40800814511522, which contains 22 as substring.

4516681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4516621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173706 + ... + 173731.

It is an arithmetic number, because the mean of its divisors is an integer number (1216033).

Almost surely, 2^4516681 is an apocalyptic number.

It is an amenable number.

4516681 is a deficient number, since it is larger than the sum of its proper divisors (347451).

4516681 is a wasteful number, since it uses less digits than its factorization.

4516681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347450.

The product of its digits is 5760, while the sum is 31.

The square root of 4516681 is about 2125.2484560634. The cubic root of 4516681 is about 165.3001088538.

The spelling of 4516681 in words is "four million, five hundred sixteen thousand, six hundred eighty-one".