1606601 has 4 divisors (see below), whose sum is σ = 1640832. Its totient is φ = 1572372.

The previous prime is 1606597. The next prime is 1606603. The reversal of 1606601 is 1066061.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1066061 = 283 ⋅3767.

It is a cyclic number.

It is not a de Polignac number, because 1606601 - 2² = 1606597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1606603) 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, 17045 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (410208).

2^1606601 is an apocalyptic number.

It is an amenable number.

1606601 is a deficient number, since it is larger than the sum of its proper divisors (34231).

1606601 is an equidigital number, since it uses as much as digits as its factorization.

1606601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34230.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1606601 is about 1267.5176527370. The cubic root of 1606601 is about 117.1213341807.

The spelling of 1606601 in words is "one million, six hundred six thousand, six hundred one".