87320682 has 36 divisors (see below), whose sum is σ = 196198470. Its totient is φ = 28034496.

The previous prime is 87320669. The next prime is 87320729. The reversal of 87320682 is 28602378.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 86322681 + 998001 = 9291^2 + 999^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 213294 + ... + 213702.

Almost surely, 2^87320682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87320682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98099235).

87320682 is an abundant number, since it is smaller than the sum of its proper divisors (108877788).

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

87320682 is a wasteful number, since it uses less digits than its factorization.

87320682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 87320682 is about 9344.5536008950. The cubic root of 87320682 is about 443.6485226663.

The spelling of 87320682 in words is "eighty-seven million, three hundred twenty thousand, six hundred eighty-two".