4081604 has 6 divisors (see below), whose sum is σ = 7142814. Its totient is φ = 2040800.

The previous prime is 4081601. The next prime is 4081607. The reversal of 4081604 is 4061804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4081601) and next prime (4081607).

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 200704 = 1970^2 + 448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4081604.

It is not an unprimeable number, because it can be changed into a prime (4081601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510197 + ... + 510204.

It is an arithmetic number, because the mean of its divisors is an integer number (1190469).

Almost surely, 2^4081604 is an apocalyptic number.

It is an amenable number.

4081604 is a deficient number, since it is larger than the sum of its proper divisors (3061210).

4081604 is a wasteful number, since it uses less digits than its factorization.

4081604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020405 (or 1020403 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 4081604 is about 2020.2979978211. The cubic root of 4081604 is about 159.8123320490.

The spelling of 4081604 in words is "four million, eighty-one thousand, six hundred four".