65087689 has 2 divisors, whose sum is σ = 65087690. Its totient is φ = 65087688.

The previous prime is 65087683. The next prime is 65087707. The reversal of 65087689 is 98678056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55428025 + 9659664 = 7445^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 65087689 - 2⁹ = 65087177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65087683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32543844 + 32543845.

It is an arithmetic number, because the mean of its divisors is an integer number (32543845).

Almost surely, 2^65087689 is an apocalyptic number.

It is an amenable number.

65087689 is a deficient number, since it is larger than the sum of its proper divisors (1).

65087689 is an equidigital number, since it uses as much as digits as its factorization.

65087689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 65087689 is about 8067.6941563250. The cubic root of 65087689 is about 402.2533014958.

The spelling of 65087689 in words is "sixty-five million, eighty-seven thousand, six hundred eighty-nine".