766897249 has 2 divisors, whose sum is σ = 766897250. Its totient is φ = 766897248.

The previous prime is 766897237. The next prime is 766897253. The reversal of 766897249 is 942798667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747475600 + 19421649 = 27340^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 766897249 - 2²⁷ = 632679521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766897193 and 766897202.

It is not a weakly prime, because it can be changed into another prime (766897289) 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 as a sum of consecutive naturals, namely, 383448624 + 383448625.

It is an arithmetic number, because the mean of its divisors is an integer number (383448625).

Almost surely, 2^766897249 is an apocalyptic number.

It is an amenable number.

766897249 is a deficient number, since it is larger than the sum of its proper divisors (1).

766897249 is an equidigital number, since it uses as much as digits as its factorization.

766897249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 58.

The square root of 766897249 is about 27692.9097243320. The cubic root of 766897249 is about 915.3328734029.

It can be divided in two parts, 76689 and 7249, that added together give a palindrome (83938).

The spelling of 766897249 in words is "seven hundred sixty-six million, eight hundred ninety-seven thousand, two hundred forty-nine".