87102681 has 8 divisors (see below), whose sum is σ = 116180064. Its totient is φ = 58046880.

The previous prime is 87102661. The next prime is 87102683. The reversal of 87102681 is 18620178.

It is a happy number.

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

It is not a de Polignac number, because 87102681 - 2⁷ = 87102553 is a prime.

It is a super-2 number, since 2×87102681² = 15173754074775522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87102683) 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, 12621 + ... + 18261.

It is an arithmetic number, because the mean of its divisors is an integer number (14522508).

Almost surely, 2^87102681 is an apocalyptic number.

It is an amenable number.

87102681 is a deficient number, since it is larger than the sum of its proper divisors (29077383).

87102681 is a wasteful number, since it uses less digits than its factorization.

87102681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 87102681 is about 9332.8817093114. The cubic root of 87102681 is about 443.2790171582.

The spelling of 87102681 in words is "eighty-seven million, one hundred two thousand, six hundred eighty-one".