806619204 has 18 divisors (see below), whose sum is σ = 2038954190. Its totient is φ = 268873056.

The previous prime is 806619169. The next prime is 806619221. The reversal of 806619204 is 402916608.

It can be written as a sum of positive squares in only one way, i.e., 699496704 + 107122500 = 26448^2 + 10350^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 22406089 = 806619204 / (8 + 0 + 6 + 6 + 1 + 9 + 2 + 0 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11203009 + ... + 11203080.

Almost surely, 2^806619204 is an apocalyptic number.

It is an amenable number.

806619204 is an abundant number, since it is smaller than the sum of its proper divisors (1232334986).

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

806619204 is a wasteful number, since it uses less digits than its factorization.

806619204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406099 (or 22406094 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 806619204 is about 28401.0423048169. The cubic root of 806619204 is about 930.8710396339.

The spelling of 806619204 in words is "eight hundred six million, six hundred nineteen thousand, two hundred four".