87080717 has 2 divisors, whose sum is σ = 87080718. Its totient is φ = 87080716.

The previous prime is 87080713. The next prime is 87080731. The reversal of 87080717 is 71708078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43705321 + 43375396 = 6611^2 + 6586^2 .

It is a cyclic number.

It is not a de Polignac number, because 87080717 - 2² = 87080713 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87080713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43540358 + 43540359.

It is an arithmetic number, because the mean of its divisors is an integer number (43540359).

Almost surely, 2^87080717 is an apocalyptic number.

It is an amenable number.

87080717 is a deficient number, since it is larger than the sum of its proper divisors (1).

87080717 is an equidigital number, since it uses as much as digits as its factorization.

87080717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 38.

The square root of 87080717 is about 9331.7049353267. The cubic root of 87080717 is about 443.2417546282.

It can be divided in two parts, 8708071 and 7, that added together give a palindrome (8708078).

The spelling of 87080717 in words is "eighty-seven million, eighty thousand, seven hundred seventeen".