87866434 has 4 divisors (see below), whose sum is σ = 131799654. Its totient is φ = 43933216.

The previous prime is 87866423. The next prime is 87866461. The reversal of 87866434 is 43466878.

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., 55547209 + 32319225 = 7453^2 + 5685^2 .

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 as a sum of consecutive naturals, namely, 21966607 + ... + 21966610.

Almost surely, 2^87866434 is an apocalyptic number.

87866434 is a deficient number, since it is larger than the sum of its proper divisors (43933220).

87866434 is a wasteful number, since it uses less digits than its factorization.

87866434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43933219.

The product of its digits is 774144, while the sum is 46.

The square root of 87866434 is about 9373.7097245434. The cubic root of 87866434 is about 444.5708677065.

The spelling of 87866434 in words is "eighty-seven million, eight hundred sixty-six thousand, four hundred thirty-four".