804674781 has 24 divisors (see below), whose sum is σ = 1227722496. Its totient is φ = 507064320.

The previous prime is 804674771. The next prime is 804674789. The reversal of 804674781 is 187476408.

It is not a de Polignac number, because 804674781 - 2¹⁰ = 804673757 is a prime.

It is a super-2 number, since 2×804674781² = 1295003006354795922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804674789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21540 + ... + 45533.

It is an arithmetic number, because the mean of its divisors is an integer number (51155104).

Almost surely, 2^804674781 is an apocalyptic number.

It is an amenable number.

804674781 is a deficient number, since it is larger than the sum of its proper divisors (423047715).

804674781 is a wasteful number, since it uses less digits than its factorization.

804674781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67153 (or 67150 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 804674781 is about 28366.7901074478. The cubic root of 804674781 is about 930.1224569931.

The spelling of 804674781 in words is "eight hundred four million, six hundred seventy-four thousand, seven hundred eighty-one".