1005604 has 12 divisors (see below), whose sum is σ = 1820700. Its totient is φ = 485408.

The previous prime is 1005593. The next prime is 1005617. The reversal of 1005604 is 4065001.

It can be written as a sum of positive squares in 2 ways, for example, as 487204 + 518400 = 698^2 + 720^2 .

It is a super-2 number, since 2×1005604² = 2022478809632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4219 + ... + 4450.

It is an arithmetic number, because the mean of its divisors is an integer number (151725).

2^1005604 is an apocalyptic number.

It is an amenable number.

1005604 is a deficient number, since it is larger than the sum of its proper divisors (815096).

1005604 is a wasteful number, since it uses less digits than its factorization.

1005604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8702 (or 8700 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1005604 is about 1002.7980853592. The cubic root of 1005604 is about 100.1864521399.

The spelling of 1005604 in words is "one million, five thousand, six hundred four".