891653 has 12 divisors (see below), whose sum is σ = 1072512. Its totient is φ = 738360.

The previous prime is 891647. The next prime is 891659. The reversal of 891653 is 356198.

891653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (891647) and next prime (891659).

It is not a de Polignac number, because 891653 - 2¹⁴ = 875269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1226 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2⁸⁹¹⁶⁵³ is an apocalyptic number.

It is an amenable number.

891653 is a deficient number, since it is larger than the sum of its proper divisors (180859).

891653 is a wasteful number, since it uses less digits than its factorization.

891653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 625 counting only the distinct ones).

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

The square root of 891653 is about 944.2737950404. The cubic root of 891653 is about 96.2495316782.

The spelling of 891653 in words is "eight hundred ninety-one thousand, six hundred fifty-three".