901606 has 4 divisors (see below), whose sum is σ = 1352412. Its totient is φ = 450802.

The previous prime is 901591. The next prime is 901613. The reversal of 901606 is 606109.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 606109 = 7 ⋅86587.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

901606 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225400 + ... + 225403.

It is an arithmetic number, because the mean of its divisors is an integer number (338103).

2⁹⁰¹⁶⁰⁶ is an apocalyptic number.

901606 is a deficient number, since it is larger than the sum of its proper divisors (450806).

901606 is a wasteful number, since it uses less digits than its factorization.

901606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450805.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 901606 is about 949.5293571028. The cubic root of 901606 is about 96.6063330739.

The spelling of 901606 in words is "nine hundred one thousand, six hundred six".