3881564 has 6 divisors (see below), whose sum is σ = 6792744. Its totient is φ = 1940780.

The previous prime is 3881543. The next prime is 3881573. The reversal of 3881564 is 4651883.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485192 + ... + 485199.

It is an arithmetic number, because the mean of its divisors is an integer number (1132124).

Almost surely, 2^3881564 is an apocalyptic number.

It is an amenable number.

3881564 is a deficient number, since it is larger than the sum of its proper divisors (2911180).

3881564 is a wasteful number, since it uses less digits than its factorization.

3881564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970395 (or 970393 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 3881564 is about 1970.1685207109. The cubic root of 3881564 is about 157.1576708585.

The spelling of 3881564 in words is "three million, eight hundred eighty-one thousand, five hundred sixty-four".