2061604 has 6 divisors (see below), whose sum is σ = 3607814. Its totient is φ = 1030800.

The previous prime is 2061601. The next prime is 2061613. The reversal of 2061604 is 4061602.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 504100 = 1248^2 + 710^2 .

It is a super-2 number, since 2×2061604² = 8500422105632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2061601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257697 + ... + 257704.

2^2061604 is an apocalyptic number.

It is an amenable number.

2061604 is a deficient number, since it is larger than the sum of its proper divisors (1546210).

2061604 is a wasteful number, since it uses less digits than its factorization.

2061604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515405 (or 515403 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2061604 is about 1435.8286805883. The cubic root of 2061604 is about 127.2726487940.

The spelling of 2061604 in words is "two million, sixty-one thousand, six hundred four".