87008693 has 2 divisors, whose sum is σ = 87008694. Its totient is φ = 87008692.

The previous prime is 87008681. The next prime is 87008711. The reversal of 87008693 is 39680078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77035729 + 9972964 = 8777^2 + 3158^2 .

It is a cyclic number.

It is not a de Polignac number, because 87008693 - 2⁶ = 87008629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87008693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87008653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43504346 + 43504347.

It is an arithmetic number, because the mean of its divisors is an integer number (43504347).

Almost surely, 2^87008693 is an apocalyptic number.

It is an amenable number.

87008693 is a deficient number, since it is larger than the sum of its proper divisors (1).

87008693 is an equidigital number, since it uses as much as digits as its factorization.

87008693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 87008693 is about 9327.8450351622. The cubic root of 87008693 is about 443.1195199525.

The spelling of 87008693 in words is "eighty-seven million, eight thousand, six hundred ninety-three".