891364 has 6 divisors (see below), whose sum is σ = 1559894. Its totient is φ = 445680.

The previous prime is 891349. The next prime is 891377. The reversal of 891364 is 463198.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 116964 = 880^2 + 342^2 .

It is an unprimeable number.

891364 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, 111417 + ... + 111424.

2⁸⁹¹³⁶⁴ is an apocalyptic number.

It is an amenable number.

891364 is a deficient number, since it is larger than the sum of its proper divisors (668530).

891364 is a wasteful number, since it uses less digits than its factorization.

891364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222845 (or 222843 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 891364 is about 944.1207549885. The cubic root of 891364 is about 96.2391318476.

The spelling of 891364 in words is "eight hundred ninety-one thousand, three hundred sixty-four".