891606 has 16 divisors (see below), whose sum is σ = 1795248. Its totient is φ = 295200.

The previous prime is 891601. The next prime is 891617. The reversal of 891606 is 606198.

It is a super-2 number, since 2×891606² = 1589922518472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 1496.

It is an arithmetic number, because the mean of its divisors is an integer number (112203).

2⁸⁹¹⁶⁰⁶ is an apocalyptic number.

891606 is an abundant number, since it is smaller than the sum of its proper divisors (903642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891606 is a wasteful number, since it uses less digits than its factorization.

891606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 891606 is about 944.2489078628. The cubic root of 891606 is about 96.2478405093.

The spelling of 891606 in words is "eight hundred ninety-one thousand, six hundred six".