3880681 has 4 divisors (see below), whose sum is σ = 4435072. Its totient is φ = 3326292.

The previous prime is 3880663. The next prime is 3880729. The reversal of 3880681 is 1860883.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1860883 = 53 ⋅35111.

It is a cyclic number.

It is not a de Polignac number, because 3880681 - 2⁷ = 3880553 is a prime.

It is a super-2 number, since 2×3880681² = 30119370047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3880601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277185 + ... + 277198.

It is an arithmetic number, because the mean of its divisors is an integer number (1108768).

Almost surely, 2^3880681 is an apocalyptic number.

It is an amenable number.

3880681 is a deficient number, since it is larger than the sum of its proper divisors (554391).

3880681 is an equidigital number, since it uses as much as digits as its factorization.

3880681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554390.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 3880681 is about 1969.9444154595. The cubic root of 3880681 is about 157.1457529179.

The spelling of 3880681 in words is "three million, eight hundred eighty thousand, six hundred eighty-one".