87666706 has 8 divisors (see below), whose sum is σ = 131877900. Its totient is φ = 43707408.

The previous prime is 87666679. The next prime is 87666707. The reversal of 87666706 is 60766678.

It can be written as a sum of positive squares in 2 ways, for example, as 86583025 + 1083681 = 9305^2 + 1041^2 .

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

It is not an unprimeable number, because it can be changed into a prime (87666707) 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 in 3 ways as a sum of consecutive naturals, for example, 62101 + ... + 63496.

Almost surely, 2^87666706 is an apocalyptic number.

87666706 is a deficient number, since it is larger than the sum of its proper divisors (44211194).

87666706 is a wasteful number, since it uses less digits than its factorization.

87666706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125948.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 87666706 is about 9363.0500372475. The cubic root of 87666706 is about 444.2337628169.

The spelling of 87666706 in words is "eighty-seven million, six hundred sixty-six thousand, seven hundred six".