1606361 has 4 divisors (see below), whose sum is σ = 1624500. Its totient is φ = 1588224.

The previous prime is 1606349. The next prime is 1606379. The reversal of 1606361 is 1636061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 866761 + 739600 = 931^2 + 860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1606361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1606321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8936 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (406125).

2^1606361 is an apocalyptic number.

It is an amenable number.

1606361 is a deficient number, since it is larger than the sum of its proper divisors (18139).

1606361 is an equidigital number, since it uses as much as digits as its factorization.

1606361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18138.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1606361 is about 1267.4229759634. The cubic root of 1606361 is about 117.1155018842.

The spelling of 1606361 in words is "one million, six hundred six thousand, three hundred sixty-one".