5649765997 has 2 divisors, whose sum is σ = 5649765998. Its totient is φ = 5649765996.

The previous prime is 5649765971. The next prime is 5649766021. The reversal of 5649765997 is 7995679465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5645869321 + 3896676 = 75139^2 + 1974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5649765997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5649765937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824882998 + 2824882999.

It is an arithmetic number, because the mean of its divisors is an integer number (2824882999).

Almost surely, 2^5649765997 is an apocalyptic number.

It is an amenable number.

5649765997 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649765997 is an equidigital number, since it uses as much as digits as its factorization.

5649765997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128595600, while the sum is 67.

The square root of 5649765997 is about 75164.9253109454. The cubic root of 5649765997 is about 1781.0529053420.

The spelling of 5649765997 in words is "five billion, six hundred forty-nine million, seven hundred sixty-five thousand, nine hundred ninety-seven".