87682281 has 4 divisors (see below), whose sum is σ = 116909712. Its totient is φ = 58454852.

The previous prime is 87682261. The next prime is 87682303. The reversal of 87682281 is 18228678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87682281 - 2¹¹ = 87680233 is a prime.

It is a super-2 number, since 2×87682281² = 15376364802725922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87682211) 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, 14613711 + ... + 14613716.

It is an arithmetic number, because the mean of its divisors is an integer number (29227428).

Almost surely, 2^87682281 is an apocalyptic number.

It is an amenable number.

87682281 is a deficient number, since it is larger than the sum of its proper divisors (29227431).

87682281 is a wasteful number, since it uses less digits than its factorization.

87682281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29227430.

The product of its digits is 86016, while the sum is 42.

The square root of 87682281 is about 9363.8817271471. The cubic root of 87682281 is about 444.2600690072.

The spelling of 87682281 in words is "eighty-seven million, six hundred eighty-two thousand, two hundred eighty-one".