87265685 has 24 divisors (see below), whose sum is σ = 115320744. Its totient is φ = 63348480.

The previous prime is 87265663. The next prime is 87265687. The reversal of 87265685 is 58656278.

It can be written as a sum of positive squares in 12 ways, for example, as 76755121 + 10510564 = 8761^2 + 3242^2 .

It is not a de Polignac number, because 87265685 - 2¹⁴ = 87249301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87265687) 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 23 ways as a sum of consecutive naturals, for example, 50699 + ... + 52391.

It is an arithmetic number, because the mean of its divisors is an integer number (4805031).

Almost surely, 2^87265685 is an apocalyptic number.

It is an amenable number.

87265685 is a deficient number, since it is larger than the sum of its proper divisors (28055059).

87265685 is a wasteful number, since it uses less digits than its factorization.

87265685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1772 counting only the distinct ones).

The product of its digits is 806400, while the sum is 47.

The square root of 87265685 is about 9341.6104072050. The cubic root of 87265685 is about 443.5553623691. Note that the first 3 decimals are identical.

The spelling of 87265685 in words is "eighty-seven million, two hundred sixty-five thousand, six hundred eighty-five".