808672221 has 32 divisors (see below), whose sum is σ = 1416403200. Its totient is φ = 446160960.

The previous prime is 808672159. The next prime is 808672253. The reversal of 808672221 is 122276808.

It is a happy number.

It is not a de Polignac number, because 808672221 - 2¹⁰ = 808671197 is a prime.

It is a super-2 number, since 2×808672221² = 1307901522034145682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808672621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68290 + ... + 79251.

It is an arithmetic number, because the mean of its divisors is an integer number (44262600).

Almost surely, 2^808672221 is an apocalyptic number.

It is an amenable number.

808672221 is a deficient number, since it is larger than the sum of its proper divisors (607730979).

808672221 is a wasteful number, since it uses less digits than its factorization.

808672221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147586 (or 147580 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 808672221 is about 28437.1626749224. The cubic root of 808672221 is about 931.6601253092.

The spelling of 808672221 in words is "eight hundred eight million, six hundred seventy-two thousand, two hundred twenty-one".