87665727 has 8 divisors (see below), whose sum is σ = 116937216. Its totient is φ = 58419032.

The previous prime is 87665717. The next prime is 87665729. The reversal of 87665727 is 72756678.

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

It is a cyclic number.

It is not a de Polignac number, because 87665727 - 2²⁴ = 70888511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87665729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4888 + ... + 14114.

It is an arithmetic number, because the mean of its divisors is an integer number (14617152).

Almost surely, 2^87665727 is an apocalyptic number.

87665727 is a deficient number, since it is larger than the sum of its proper divisors (29271489).

87665727 is a wasteful number, since it uses less digits than its factorization.

87665727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12397.

The product of its digits is 987840, while the sum is 48.

The square root of 87665727 is about 9362.9977571289. The cubic root of 87665727 is about 444.2321091809.

The spelling of 87665727 in words is "eighty-seven million, six hundred sixty-five thousand, seven hundred twenty-seven".