969808687 has 2 divisors, whose sum is σ = 969808688. Its totient is φ = 969808686.

The previous prime is 969808607. The next prime is 969808727. The reversal of 969808687 is 786808969.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 969808687 - 2¹⁹ = 969284399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969808607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484904343 + 484904344.

It is an arithmetic number, because the mean of its divisors is an integer number (484904344).

Almost surely, 2^969808687 is an apocalyptic number.

969808687 is a deficient number, since it is larger than the sum of its proper divisors (1).

969808687 is an equidigital number, since it uses as much as digits as its factorization.

969808687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The square root of 969808687 is about 31141.7515082245. The cubic root of 969808687 is about 989.8332157903.

The spelling of 969808687 in words is "nine hundred sixty-nine million, eight hundred eight thousand, six hundred eighty-seven".