850548640 has 48 divisors (see below), whose sum is σ = 2017522080. Its totient is φ = 338848000.

The previous prime is 850548617. The next prime is 850548653. The reversal of 850548640 is 46845058.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 850548593 and 850548602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29571 + ... + 50749.

It is an arithmetic number, because the mean of its divisors is an integer number (42031710).

Almost surely, 2^850548640 is an apocalyptic number.

850548640 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 850548640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008761040).

850548640 is an abundant number, since it is smaller than the sum of its proper divisors (1166973440).

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

850548640 is a wasteful number, since it uses less digits than its factorization.

850548640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21445 (or 21437 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 850548640 is about 29164.1670547952. The cubic root of 850548640 is about 947.4720008991.

The spelling of 850548640 in words is "eight hundred fifty million, five hundred forty-eight thousand, six hundred forty".