804975660 has 144 divisors (see below), whose sum is σ = 2619358560. Its totient is φ = 199480320.

The previous prime is 804975631. The next prime is 804975701. The reversal of 804975660 is 66579408.

804975660 is a `hidden beast` number, since 80 + 4 + 9 + 7 + 566 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179040 + ... + 183480.

It is an arithmetic number, because the mean of its divisors is an integer number (18189990).

Almost surely, 2^804975660 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 804975660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309679280).

804975660 is an abundant number, since it is smaller than the sum of its proper divisors (1814382900).

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

804975660 is a wasteful number, since it uses less digits than its factorization.

804975660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528 (or 4523 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 804975660 is about 28372.0929788410. The cubic root of 804975660 is about 930.2383710859.

The spelling of 804975660 in words is "eight hundred four million, nine hundred seventy-five thousand, six hundred sixty".