9775657069 has 2 divisors, whose sum is σ = 9775657070. Its totient is φ = 9775657068.

The previous prime is 9775657063. The next prime is 9775657093. The reversal of 9775657069 is 9607565779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9141272100 + 634384969 = 95610^2 + 25187^2 .

It is a cyclic number.

It is not a de Polignac number, because 9775657069 - 2³ = 9775657061 is a prime.

It is a super-2 number, since 2×9775657069² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9775656998 and 9775657016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9775657061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4887828534 + 4887828535.

It is an arithmetic number, because the mean of its divisors is an integer number (4887828535).

Almost surely, 2^9775657069 is an apocalyptic number.

It is an amenable number.

9775657069 is a deficient number, since it is larger than the sum of its proper divisors (1).

9775657069 is an equidigital number, since it uses as much as digits as its factorization.

9775657069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25004700, while the sum is 61.

The square root of 9775657069 is about 98871.9225513492. The cubic root of 9775657069 is about 2138.2016123143.

The spelling of 9775657069 in words is "nine billion, seven hundred seventy-five million, six hundred fifty-seven thousand, sixty-nine".