87566250 has 80 divisors (see below), whose sum is σ = 230551200. Its totient is φ = 22104000.

The previous prime is 87566243. The next prime is 87566251. The reversal of 87566250 is 5266578.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87566199 and 87566208.

It is not an unprimeable number, because it can be changed into a prime (87566251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 70636 + ... + 71864.

It is an arithmetic number, because the mean of its divisors is an integer number (2881890).

Almost surely, 2^87566250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87566250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115275600).

87566250 is an abundant number, since it is smaller than the sum of its proper divisors (142984950).

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

87566250 is a wasteful number, since it uses less digits than its factorization.

87566250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1258 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 87566250 is about 9357.6840083431. The cubic root of 87566250 is about 444.0640176339.

The spelling of 87566250 in words is "eighty-seven million, five hundred sixty-six thousand, two hundred fifty".