872963866 has 8 divisors (see below), whose sum is σ = 1344836340. Its totient is φ = 424685088.

The previous prime is 872963851. The next prime is 872963867. The reversal of 872963866 is 668369278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 819161641 + 53802225 = 28621^2 + 7335^2 .

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

It is a super-2 number, since 2×872963866² = 1524131822683331912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872963867) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5898331 + ... + 5898478.

Almost surely, 2^872963866 is an apocalyptic number.

872963866 is a deficient number, since it is larger than the sum of its proper divisors (471872474).

872963866 is a wasteful number, since it uses less digits than its factorization.

872963866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11796848.

The product of its digits is 5225472, while the sum is 55.

The square root of 872963866 is about 29545.9619237553. The cubic root of 872963866 is about 955.7231134137.

The spelling of 872963866 in words is "eight hundred seventy-two million, nine hundred sixty-three thousand, eight hundred sixty-six".