864556226 has 8 divisors (see below), whose sum is σ = 1297584444. Its totient is φ = 432028080.

The previous prime is 864556219. The next prime is 864556243. The reversal of 864556226 is 622655468.

It can be written as a sum of positive squares in 2 ways, for example, as 864301201 + 255025 = 29399^2 + 505^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 120665 + ... + 127628.

Almost surely, 2^864556226 is an apocalyptic number.

864556226 is a deficient number, since it is larger than the sum of its proper divisors (433028218).

864556226 is a wasteful number, since it uses less digits than its factorization.

864556226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250036.

The product of its digits is 691200, while the sum is 44.

The square root of 864556226 is about 29403.3369874917. The cubic root of 864556226 is about 952.6449747757.

The spelling of 864556226 in words is "eight hundred sixty-four million, five hundred fifty-six thousand, two hundred twenty-six".