769865653 has 2 divisors, whose sum is σ = 769865654. Its totient is φ = 769865652.

The previous prime is 769865641. The next prime is 769865669. The reversal of 769865653 is 356568967.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549105489 + 220760164 = 23433^2 + 14858^2 .

It is an emirp because it is prime and its reverse (356568967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 769865653 - 2²⁵ = 736311221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 769865594 and 769865603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (769865633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384932826 + 384932827.

It is an arithmetic number, because the mean of its divisors is an integer number (384932827).

Almost surely, 2^769865653 is an apocalyptic number.

It is an amenable number.

769865653 is a deficient number, since it is larger than the sum of its proper divisors (1).

769865653 is an equidigital number, since it uses as much as digits as its factorization.

769865653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 55.

The square root of 769865653 is about 27746.4529805163. The cubic root of 769865653 is about 916.5123359062.

The spelling of 769865653 in words is "seven hundred sixty-nine million, eight hundred sixty-five thousand, six hundred fifty-three".