617228866 has 16 divisors (see below), whose sum is σ = 973475640. Its totient is φ = 293086080.

The previous prime is 617228849. The next prime is 617228867. The reversal of 617228866 is 668822716.

It can be written as a sum of positive squares in 4 ways, for example, as 230280625 + 386948241 = 15175^2 + 19671^2 .

It is not an unprimeable number, because it can be changed into a prime (617228867) 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 7 ways as a sum of consecutive naturals, for example, 83691 + ... + 90766.

Almost surely, 2^617228866 is an apocalyptic number.

617228866 is a deficient number, since it is larger than the sum of its proper divisors (356246774).

617228866 is a wasteful number, since it uses less digits than its factorization.

617228866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174549.

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

The square root of 617228866 is about 24844.0911687266. The cubic root of 617228866 is about 851.4295970112.

The spelling of 617228866 in words is "six hundred seventeen million, two hundred twenty-eight thousand, eight hundred sixty-six".