87047266 has 4 divisors (see below), whose sum is σ = 130570902. Its totient is φ = 43523632.

The previous prime is 87047201. The next prime is 87047267. The reversal of 87047266 is 66274078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46991025 + 40056241 = 6855^2 + 6329^2 .

It is not an unprimeable number, because it can be changed into a prime (87047267) 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 as a sum of consecutive naturals, namely, 21761815 + ... + 21761818.

Almost surely, 2^87047266 is an apocalyptic number.

87047266 is a deficient number, since it is larger than the sum of its proper divisors (43523636).

87047266 is a wasteful number, since it uses less digits than its factorization.

87047266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43523635.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 87047266 is about 9329.9124326009. The cubic root of 87047266 is about 443.1849920468.

The spelling of 87047266 in words is "eighty-seven million, forty-seven thousand, two hundred sixty-six".