87682266 has 72 divisors (see below), whose sum is σ = 223678260. Its totient is φ = 24748416.

The previous prime is 87682261. The next prime is 87682303. The reversal of 87682266 is 66228678.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70913241 + 16769025 = 8421^2 + 4095^2 .

It is not an unprimeable number, because it can be changed into a prime (87682261) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 77940 + ... + 79056.

Almost surely, 2^87682266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87682266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111839130).

87682266 is an abundant number, since it is smaller than the sum of its proper divisors (135995994).

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

87682266 is a wasteful number, since it uses less digits than its factorization.

87682266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1218 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 87682266 is about 9363.8809261972. The cubic root of 87682266 is about 444.2600436737.

The spelling of 87682266 in words is "eighty-seven million, six hundred eighty-two thousand, two hundred sixty-six".