4688681 has 4 divisors (see below), whose sum is σ = 4702932. Its totient is φ = 4674432.

The previous prime is 4688669. The next prime is 4688683. The reversal of 4688681 is 1868864.

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 2128681 + 2560000 = 1459^2 + 1600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4688681 is a prime.

It is a super-2 number, since 2×4688681² = 43967459039522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4688683) 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, 6620 + ... + 7293.

It is an arithmetic number, because the mean of its divisors is an integer number (1175733).

Almost surely, 2^4688681 is an apocalyptic number.

It is an amenable number.

4688681 is a deficient number, since it is larger than the sum of its proper divisors (14251).

4688681 is a wasteful number, since it uses less digits than its factorization.

4688681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14250.

The product of its digits is 73728, while the sum is 41.

The square root of 4688681 is about 2165.3362325514. The cubic root of 4688681 is about 167.3722914570.

The spelling of 4688681 in words is "four million, six hundred eighty-eight thousand, six hundred eighty-one".