853660980 has 144 divisors (see below), whose sum is σ = 2641766400. Its totient is φ = 223098624.

The previous prime is 853660931. The next prime is 853660987. The reversal of 853660980 is 89066358.

853660980 is a `hidden beast` number, since 8 + 5 + 36 + 609 + 8 + 0 = 666.

853660980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853660987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2445846 + ... + 2446194.

It is an arithmetic number, because the mean of its divisors is an integer number (18345600).

Almost surely, 2^853660980 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 853660980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320883200).

853660980 is an abundant number, since it is smaller than the sum of its proper divisors (1788105420).

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

853660980 is a wasteful number, since it uses less digits than its factorization.

853660980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 853660980 is about 29217.4773038331. The cubic root of 853660980 is about 948.6262619380.

The spelling of 853660980 in words is "eight hundred fifty-three million, six hundred sixty thousand, nine hundred eighty".