804740660 has 12 divisors (see below), whose sum is σ = 1689955428. Its totient is φ = 321896256.

The previous prime is 804740659. The next prime is 804740663. The reversal of 804740660 is 66047408.

It can be written as a sum of positive squares in 2 ways, for example, as 120604324 + 684136336 = 10982^2 + 26156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 804740660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804740663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20118497 + ... + 20118536.

It is an arithmetic number, because the mean of its divisors is an integer number (140829619).

Almost surely, 2^804740660 is an apocalyptic number.

It is an amenable number.

804740660 is an abundant number, since it is smaller than the sum of its proper divisors (885214768).

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

804740660 is a wasteful number, since it uses less digits than its factorization.

804740660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40237042 (or 40237040 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 804740660 is about 28367.9512830941. The cubic root of 804740660 is about 930.1478394485.

The spelling of 804740660 in words is "eight hundred four million, seven hundred forty thousand, six hundred sixty".