873565020 has 96 divisors (see below), whose sum is σ = 2728535040. Its totient is φ = 232027200.

The previous prime is 873565003. The next prime is 873565037. The reversal of 873565020 is 20565378.

873565020 is a `hidden beast` number, since 8 + 73 + 565 + 0 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (873565003) and next prime (873565037).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138945 + ... + 145095.

It is an arithmetic number, because the mean of its divisors is an integer number (28422240).

Almost surely, 2^873565020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 873565020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1364267520).

873565020 is an abundant number, since it is smaller than the sum of its proper divisors (1854970020).

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

873565020 is a wasteful number, since it uses less digits than its factorization.

873565020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432 (or 6424 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 873565020 is about 29556.1333736333. The cubic root of 873565020 is about 955.9424447298.

The spelling of 873565020 in words is "eight hundred seventy-three million, five hundred sixty-five thousand, twenty".