1601005 has 16 divisors (see below), whose sum is σ = 2217600. Its totient is φ = 1086912.

The previous prime is 1600993. The next prime is 1601023. The reversal of 1601005 is 5001061.

It is a cyclic number.

It is not a de Polignac number, because 1601005 - 2⁷ = 1600877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5062 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

2^1601005 is an apocalyptic number.

It is an amenable number.

1601005 is a deficient number, since it is larger than the sum of its proper divisors (616595).

1601005 is a wasteful number, since it uses less digits than its factorization.

1601005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 1601005 is about 1265.3082628356. The cubic root of 1601005 is about 116.9851930515.

Adding to 1601005 its reverse (5001061), we get a palindrome (6602066).

The spelling of 1601005 in words is "one million, six hundred one thousand, five".