8685537120 has 384 divisors, whose sum is σ = 33873033600. Its totient is φ = 2063867904.

The previous prime is 8685537103. The next prime is 8685537163. The reversal of 8685537120 is 217355868.

8685537120 is a `hidden beast` number, since 8 + 6 + 8 + 553 + 71 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1625974 + ... + 1631306.

It is an arithmetic number, because the mean of its divisors is an integer number (88211025).

Almost surely, 2^8685537120 is an apocalyptic number.

8685537120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8685537120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16936516800).

8685537120 is an abundant number, since it is smaller than the sum of its proper divisors (25187496480).

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

8685537120 is a wasteful number, since it uses less digits than its factorization.

8685537120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399 (or 5385 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The square root of 8685537120 is about 93196.2291082638. The cubic root of 8685537120 is about 2055.5697924485.

The spelling of 8685537120 in words is "eight billion, six hundred eighty-five million, five hundred thirty-seven thousand, one hundred twenty".