69768354769 has 3 divisors (see below), whose sum is σ = 69768618907. Its totient is φ = 69768090632.

The previous prime is 69768354757. The next prime is 69768354779. The reversal of 69768354769 is 96745386796.

The square root of 69768354769 is 264137.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 27707267025 + 42061087744 = 166455^2 + 205088^2 .

It is not a de Polignac number, because 69768354769 - 2¹³ = 69768346577 is a prime.

It is a super-2 number, since 2×69768354769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69768354698 and 69768354707.

It is not an unprimeable number, because it can be changed into a prime (69768354779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 132069 + ... + 396205.

Almost surely, 2^69768354769 is an apocalyptic number.

69768354769 is the 264137-th square number.

69768354769 is the 132069-th centered octagonal number.

It is an amenable number.

69768354769 is a deficient number, since it is larger than the sum of its proper divisors (264138).

69768354769 is an frugal number, since it uses more digits than its factorization.

69768354769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528274 (or 264137 counting only the distinct ones).

The product of its digits is 411505920, while the sum is 70.

The spelling of 69768354769 in words is "sixty-nine billion, seven hundred sixty-eight million, three hundred fifty-four thousand, seven hundred sixty-nine".