221775676 has 24 divisors (see below), whose sum is σ = 432568080. Its totient is φ = 98871552.

The previous prime is 221775667. The next prime is 221775689. The reversal of 221775676 is 676577122.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84535 + ... + 87118.

It is an arithmetic number, because the mean of its divisors is an integer number (18023670).

Almost surely, 2^221775676 is an apocalyptic number.

It is an amenable number.

221775676 is a deficient number, since it is larger than the sum of its proper divisors (210792404).

221775676 is a wasteful number, since it uses less digits than its factorization.

221775676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171693 (or 171691 counting only the distinct ones).

The product of its digits is 246960, while the sum is 43.

The square root of 221775676 is about 14892.1347025871. The cubic root of 221775676 is about 605.3008780504.

The spelling of 221775676 in words is "two hundred twenty-one million, seven hundred seventy-five thousand, six hundred seventy-six".