87322881 has 8 divisors (see below), whose sum is σ = 121492800. Its totient is φ = 55684112.

The previous prime is 87322871. The next prime is 87322901. The reversal of 87322881 is 18822378.

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

It is a cyclic number.

It is not a de Polignac number, because 87322881 - 2⁶ = 87322817 is a prime.

It is a super-2 number, since 2×87322881² = 15250571092280322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87322871) 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, 632706 + ... + 632843.

It is an arithmetic number, because the mean of its divisors is an integer number (15186600).

Almost surely, 2^87322881 is an apocalyptic number.

It is an amenable number.

87322881 is a deficient number, since it is larger than the sum of its proper divisors (34169919).

87322881 is a wasteful number, since it uses less digits than its factorization.

87322881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265575.

The product of its digits is 43008, while the sum is 39.

The square root of 87322881 is about 9344.6712622756. The cubic root of 87322881 is about 443.6522467742.

The spelling of 87322881 in words is "eighty-seven million, three hundred twenty-two thousand, eight hundred eighty-one".