4090681 has 8 divisors (see below), whose sum is σ = 4921280. Its totient is φ = 3321648.

The previous prime is 4090679. The next prime is 4090703. The reversal of 4090681 is 1860904.

4090681 = T₃₅₀ + T₃₅₁ + ... + T₄₀₆.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4090681 - 2¹ = 4090679 is a prime.

It is a super-2 number, since 2×4090681² = 33467342087522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4090651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15246 + ... + 15511.

It is an arithmetic number, because the mean of its divisors is an integer number (615160).

Almost surely, 2^4090681 is an apocalyptic number.

It is an amenable number.

4090681 is a deficient number, since it is larger than the sum of its proper divisors (830599).

4090681 is a wasteful number, since it uses less digits than its factorization.

4090681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30783.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 4090681 is about 2022.5432010219. The cubic root of 4090681 is about 159.9307121868.

The spelling of 4090681 in words is "four million, ninety thousand, six hundred eighty-one".