891622 has 16 divisors (see below), whose sum is σ = 1406592. Its totient is φ = 423360.

The previous prime is 891617. The next prime is 891629. The reversal of 891622 is 226198.

It is a happy number.

891622 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891629) 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, 4428 + ... + 4624.

It is an arithmetic number, because the mean of its divisors is an integer number (87912).

2⁸⁹¹⁶²² is an apocalyptic number.

891622 is a deficient number, since it is larger than the sum of its proper divisors (514970).

891622 is a wasteful number, since it uses less digits than its factorization.

891622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its digits is 1728, while the sum is 28.

The square root of 891622 is about 944.2573801671. The cubic root of 891622 is about 96.2484162330.

It can be divided in two parts, 89 and 1622, that added together give a triangular number (1711 = T₅₈).

The spelling of 891622 in words is "eight hundred ninety-one thousand, six hundred twenty-two".