4512681 has 6 divisors (see below), whose sum is σ = 6518330. Its totient is φ = 3008448.

The previous prime is 4512653. The next prime is 4512707. The reversal of 4512681 is 1862154.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 826281 = 1920^2 + 909^2 .

It is not a de Polignac number, because 4512681 - 2⁶ = 4512617 is a prime.

It is a super-2 number, since 2×4512681² = 40728579615522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4514681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 250696 + ... + 250713.

Almost surely, 2^4512681 is an apocalyptic number.

It is an amenable number.

4512681 is a deficient number, since it is larger than the sum of its proper divisors (2005649).

4512681 is a wasteful number, since it uses less digits than its factorization.

4512681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501415 (or 501412 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 4512681 is about 2124.3071811770. The cubic root of 4512681 is about 165.2512975165.

The spelling of 4512681 in words is "four million, five hundred twelve thousand, six hundred eighty-one".