806224987 has 4 divisors (see below), whose sum is σ = 811360336. Its totient is φ = 801089640.

The previous prime is 806224973. The next prime is 806224997. The reversal of 806224987 is 789422608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806224987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806224927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2567439 + ... + 2567752.

It is an arithmetic number, because the mean of its divisors is an integer number (202840084).

Almost surely, 2^806224987 is an apocalyptic number.

806224987 is a deficient number, since it is larger than the sum of its proper divisors (5135349).

806224987 is a wasteful number, since it uses less digits than its factorization.

806224987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135348.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 806224987 is about 28394.1012712148. The cubic root of 806224987 is about 930.7193674921.

The spelling of 806224987 in words is "eight hundred six million, two hundred twenty-four thousand, nine hundred eighty-seven".