87168256 has 54 divisors (see below), whose sum is σ = 202432650. Its totient is φ = 37352448.

The previous prime is 87168253. The next prime is 87168259. The reversal of 87168256 is 65286178.

It is an interprime number because it is at equal distance from previous prime (87168253) and next prime (87168259).

It can be written as a sum of positive squares in only one way, i.e., 84345856 + 2822400 = 9184^2 + 1680^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87168251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9070 + ... + 16018.

Almost surely, 2^87168256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87168256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101216325).

87168256 is an abundant number, since it is smaller than the sum of its proper divisors (115264394).

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

87168256 is an equidigital number, since it uses as much as digits as its factorization.

87168256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979 (or 6958 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 87168256 is about 9336.3941647726. The cubic root of 87168256 is about 443.3902296937.

The spelling of 87168256 in words is "eighty-seven million, one hundred sixty-eight thousand, two hundred fifty-six".