9665403677 has 2 divisors, whose sum is σ = 9665403678. Its totient is φ = 9665403676.

The previous prime is 9665403653. The next prime is 9665403697. The reversal of 9665403677 is 7763045669.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8352863236 + 1312540441 = 91394^2 + 36229^2 .

It is a cyclic number.

It is not a de Polignac number, because 9665403677 - 2⁶ = 9665403613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9665403637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832701838 + 4832701839.

It is an arithmetic number, because the mean of its divisors is an integer number (4832701839).

Almost surely, 2^9665403677 is an apocalyptic number.

It is an amenable number.

9665403677 is a deficient number, since it is larger than the sum of its proper divisors (1).

9665403677 is an equidigital number, since it uses as much as digits as its factorization.

9665403677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 53.

The square root of 9665403677 is about 98312.7849112210. The cubic root of 9665403677 is about 2130.1327311910.

The spelling of 9665403677 in words is "nine billion, six hundred sixty-five million, four hundred three thousand, six hundred seventy-seven".