87265687 has 2 divisors, whose sum is σ = 87265688. Its totient is φ = 87265686.

The previous prime is 87265663. The next prime is 87265741. The reversal of 87265687 is 78656278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87265687 - 2¹⁵ = 87232919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87265687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87265487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43632843 + 43632844.

It is an arithmetic number, because the mean of its divisors is an integer number (43632844).

Almost surely, 2^87265687 is an apocalyptic number.

87265687 is a deficient number, since it is larger than the sum of its proper divisors (1).

87265687 is an equidigital number, since it uses as much as digits as its factorization.

87265687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 87265687 is about 9341.6105142529. The cubic root of 87265687 is about 443.5553657577. Note that the first 3 decimals are identical.

The spelling of 87265687 in words is "eighty-seven million, two hundred sixty-five thousand, six hundred eighty-seven".