4016681 has 4 divisors (see below), whose sum is σ = 4026192. Its totient is φ = 4007172.

The previous prime is 4016671. The next prime is 4016689. The reversal of 4016681 is 1866104.

4016681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4016681 is a prime.

It is a super-2 number, since 2×4016681² = 32267452511522, which contains 22 as substring.

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 4016681.

It is not an unprimeable number, because it can be changed into a prime (4016689) 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, 4091 + ... + 4976.

It is an arithmetic number, because the mean of its divisors is an integer number (1006548).

Almost surely, 2^4016681 is an apocalyptic number.

It is an amenable number.

4016681 is a deficient number, since it is larger than the sum of its proper divisors (9511).

4016681 is an equidigital number, since it uses as much as digits as its factorization.

4016681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 4016681 is about 2004.1659112958. The cubic root of 4016681 is about 158.9604611415.

The spelling of 4016681 in words is "four million, sixteen thousand, six hundred eighty-one".