87166500 has 48 divisors (see below), whose sum is σ = 253833216. Its totient is φ = 23244000.

The previous prime is 87166493. The next prime is 87166507. The reversal of 87166500 is 566178.

It is an interprime number because it is at equal distance from previous prime (87166493) and next prime (87166507).

It is not an unprimeable number, because it can be changed into a prime (87166507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27556 + ... + 30555.

It is an arithmetic number, because the mean of its divisors is an integer number (5288192).

Almost surely, 2^87166500 is an apocalyptic number.

It is an amenable number.

87166500 is an abundant number, since it is smaller than the sum of its proper divisors (166666716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87166500 is a wasteful number, since it uses less digits than its factorization.

87166500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58133 (or 58121 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 87166500 is about 9336.3001237107. The cubic root of 87166500 is about 443.3872523160.

The spelling of 87166500 in words is "eighty-seven million, one hundred sixty-six thousand, five hundred".