87766 has 8 divisors (see below), whose sum is σ = 150480. Its totient is φ = 37608.

The previous prime is 87751. The next prime is 87767. The reversal of 87766 is 66778.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3121 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (18810).

2⁸⁷⁷⁶⁶ is an apocalyptic number.

87766 is a deficient number, since it is larger than the sum of its proper divisors (62714).

87766 is a wasteful number, since it uses less digits than its factorization.

87766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278.

The product of its digits is 14112, while the sum is 34.

The square root of 87766 is about 296.2532700241. The cubic root of 87766 is about 44.4401417131.

It can be divided in two parts, 8 and 7766, that multiplied together give a triangular number (62128 = T₃₅₂).

The spelling of 87766 in words is "eighty-seven thousand, seven hundred sixty-six".