893561 has 4 divisors (see below), whose sum is σ = 897792. Its totient is φ = 889332.

The previous prime is 893549. The next prime is 893567. The reversal of 893561 is 165398.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165398 = 2 ⋅82699.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-893561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (893567) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 2226.

It is an arithmetic number, because the mean of its divisors is an integer number (224448).

2⁸⁹³⁵⁶¹ is an apocalyptic number.

It is an amenable number.

893561 is a deficient number, since it is larger than the sum of its proper divisors (4231).

893561 is a wasteful number, since it uses less digits than its factorization.

893561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230.

The product of its digits is 6480, while the sum is 32.

The square root of 893561 is about 945.2835553420. The cubic root of 893561 is about 96.3181358220.

The spelling of 893561 in words is "eight hundred ninety-three thousand, five hundred sixty-one".