845436 has 24 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 275632.

The previous prime is 845431. The next prime is 845441. The reversal of 845436 is 634548.

It is an interprime number because it is at equal distance from previous prime (845431) and next prime (845441).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845431) by changing a digit.

845436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (84000).

2⁸⁴⁵⁴³⁶ is an apocalyptic number.

It is an amenable number.

845436 is an abundant number, since it is smaller than the sum of its proper divisors (1170564).

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

845436 is a wasteful number, since it uses less digits than its factorization.

845436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553 (or 1551 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 845436 is about 919.4759376949. The cubic root of 845436 is about 94.5569769219.

The spelling of 845436 in words is "eight hundred forty-five thousand, four hundred thirty-six".