87147866 has 8 divisors (see below), whose sum is σ = 140777364. Its totient is φ = 40222080.

The previous prime is 87147829. The next prime is 87147877. The reversal of 87147866 is 66874178.

It can be written as a sum of positive squares in 2 ways, for example, as 67158025 + 19989841 = 8195^2 + 4471^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 87147866.

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 3 ways as a sum of consecutive naturals, for example, 1675895 + ... + 1675946.

Almost surely, 2^87147866 is an apocalyptic number.

87147866 is a deficient number, since it is larger than the sum of its proper divisors (53629498).

87147866 is a wasteful number, since it uses less digits than its factorization.

87147866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351856.

The product of its digits is 451584, while the sum is 47.

The square root of 87147866 is about 9335.3021375850. The cubic root of 87147866 is about 443.3556550592.

The spelling of 87147866 in words is "eighty-seven million, one hundred forty-seven thousand, eight hundred sixty-six".