4666681 has 2 divisors, whose sum is σ = 4666682. Its totient is φ = 4666680.

The previous prime is 4666679. The next prime is 4666691. The reversal of 4666681 is 1866664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4477456 + 189225 = 2116^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4666681 - 2¹ = 4666679 is a prime.

It is a super-2 number, since 2×4666681² = 43555823111522, which contains 22 as substring.

Together with 4666679, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4666681.

It is not a weakly prime, because it can be changed into another prime (4666691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2333340 + 2333341.

It is an arithmetic number, because the mean of its divisors is an integer number (2333341).

Almost surely, 2^4666681 is an apocalyptic number.

It is an amenable number.

4666681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4666681 is an equidigital number, since it uses as much as digits as its factorization.

4666681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 4666681 is about 2160.2502169888. The cubic root of 4666681 is about 167.1101022541.

The spelling of 4666681 in words is "four million, six hundred sixty-six thousand, six hundred eighty-one".