87670 has 16 divisors (see below), whose sum is σ = 172368. Its totient is φ = 31840.
The previous prime is 87649. The next prime is 87671. The reversal of 87670 is 7678.
It is an alternating number because its digits alternate between even and odd.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87671) 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, 289 + ... + 508.
It is an arithmetic number, because the mean of its divisors is an integer number (10773).
287670 is an apocalyptic number.
87670 is a deficient number, since it is larger than the sum of its proper divisors (84698).
87670 is a wasteful number, since it uses less digits than its factorization.
87670 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 815.
The product of its (nonzero) digits is 2352, while the sum is 28.
The square root of 87670 is about 296.0912021658. The cubic root of 87670 is about 44.4239326646.
It can be divided in two parts, 876 and 70, that added together give a triangular number (946 = T43).
The spelling of 87670 in words is "eighty-seven thousand, six hundred seventy".
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