9001605 has 16 divisors (see below), whose sum is σ = 14440320. Its totient is φ = 4788288.

The previous prime is 9001561. The next prime is 9001621. The reversal of 9001605 is 5061009.

It is not a de Polignac number, because 9001605 - 2⁹ = 9001093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9336 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (902520).

Almost surely, 2^9001605 is an apocalyptic number.

It is an amenable number.

9001605 is a deficient number, since it is larger than the sum of its proper divisors (5438715).

9001605 is a wasteful number, since it uses less digits than its factorization.

9001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 9001605 is about 3000.2674880750. The cubic root of 9001605 is about 208.0207465130.

The spelling of 9001605 in words is "nine million, one thousand, six hundred five".