4208681 has 4 divisors (see below), whose sum is σ = 4259472. Its totient is φ = 4157892.

The previous prime is 4208657. The next prime is 4208689. The reversal of 4208681 is 1868024.

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 not a de Polignac number, because 4208681 - 2¹⁰ = 4207657 is a prime.

It is a super-2 number, since 2×4208681² = 35425991519522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4208689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25271 + ... + 25436.

It is an arithmetic number, because the mean of its divisors is an integer number (1064868).

Almost surely, 2^4208681 is an apocalyptic number.

It is an amenable number.

4208681 is a deficient number, since it is larger than the sum of its proper divisors (50791).

4208681 is an equidigital number, since it uses as much as digits as its factorization.

4208681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50790.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 4208681 is about 2051.5070070560. The cubic root of 4208681 is about 161.4539482162.

The spelling of 4208681 in words is "four million, two hundred eight thousand, six hundred eighty-one".