804217816 has 16 divisors (see below), whose sum is σ = 1573470000. Its totient is φ = 384625824.

The previous prime is 804217753. The next prime is 804217831. The reversal of 804217816 is 618712408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2185191 + ... + 2185558.

It is an arithmetic number, because the mean of its divisors is an integer number (98341875).

Almost surely, 2^804217816 is an apocalyptic number.

It is an amenable number.

804217816 is a deficient number, since it is larger than the sum of its proper divisors (769252184).

804217816 is a wasteful number, since it uses less digits than its factorization.

804217816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4370778 (or 4370774 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 804217816 is about 28358.7343864285. The cubic root of 804217816 is about 929.9463552516.

The spelling of 804217816 in words is "eight hundred four million, two hundred seventeen thousand, eight hundred sixteen".