87235285 has 4 divisors (see below), whose sum is σ = 104682348. Its totient is φ = 69788224.

The previous prime is 87235283. The next prime is 87235319. The reversal of 87235285 is 58253278.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16826404 + 70408881 = 4102^2 + 8391^2 .

It is a cyclic number.

It is not a de Polignac number, because 87235285 - 2¹ = 87235283 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87235283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8723524 + ... + 8723533.

It is an arithmetic number, because the mean of its divisors is an integer number (26170587).

Almost surely, 2^87235285 is an apocalyptic number.

It is an amenable number.

87235285 is a deficient number, since it is larger than the sum of its proper divisors (17447063).

87235285 is a wasteful number, since it uses less digits than its factorization.

87235285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447062.

The product of its digits is 134400, while the sum is 40.

The square root of 87235285 is about 9339.9831370297. The cubic root of 87235285 is about 443.5038505250.

The spelling of 87235285 in words is "eighty-seven million, two hundred thirty-five thousand, two hundred eighty-five".