4081564 has 24 divisors (see below), whose sum is σ = 7626528. Its totient is φ = 1904640.

The previous prime is 4081549. The next prime is 4081579. The reversal of 4081564 is 4651804.

It is an interprime number because it is at equal distance from previous prime (4081549) and next prime (4081579).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 in 7 ways as a sum of consecutive naturals, for example, 12969 + ... + 13279.

It is an arithmetic number, because the mean of its divisors is an integer number (317772).

Almost surely, 2^4081564 is an apocalyptic number.

It is an amenable number.

4081564 is a deficient number, since it is larger than the sum of its proper divisors (3544964).

4081564 is a wasteful number, since it uses less digits than its factorization.

4081564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 4081564 is about 2020.2880982672. The cubic root of 4081564 is about 159.8118099900.

The spelling of 4081564 in words is "four million, eighty-one thousand, five hundred sixty-four".