87697 has 2 divisors, whose sum is σ = 87698. Its totient is φ = 87696.

The previous prime is 87691. The next prime is 87701. The reversal of 87697 is 79678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87616 + 81 = 296^2 + 9^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87697 is a prime.

It is not a weakly prime, because it can be changed into another prime (87691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43848 + 43849.

It is an arithmetic number, because the mean of its divisors is an integer number (43849).

2⁸⁷⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

87697 is a deficient number, since it is larger than the sum of its proper divisors (1).

87697 is an equidigital number, since it uses as much as digits as its factorization.

87697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 87697 is about 296.1367927158. The cubic root of 87697 is about 44.4284926550.

It can be divided in two parts, 87 and 697, that added together give a square (784 = 28²).

The spelling of 87697 in words is "eighty-seven thousand, six hundred ninety-seven".