87427666 has 8 divisors (see below), whose sum is σ = 131355900. Its totient is φ = 43642368.

The previous prime is 87427601. The next prime is 87427679. The reversal of 87427666 is 66672478.

It can be written as a sum of positive squares in 2 ways, for example, as 85951441 + 1476225 = 9271^2 + 1215^2 .

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

It is an unprimeable number.

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, 34191 + ... + 36658.

Almost surely, 2^87427666 is an apocalyptic number.

87427666 is a deficient number, since it is larger than the sum of its proper divisors (43928234).

87427666 is a wasteful number, since it uses less digits than its factorization.

87427666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71468.

The product of its digits is 677376, while the sum is 46.

The square root of 87427666 is about 9350.2762526034. The cubic root of 87427666 is about 443.8296325778.

The spelling of 87427666 in words is "eighty-seven million, four hundred twenty-seven thousand, six hundred sixty-six".