765750049 has 2 divisors, whose sum is σ = 765750050. Its totient is φ = 765750048.

The previous prime is 765749993. The next prime is 765750053. The reversal of 765750049 is 940057567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413512225 + 352237824 = 20335^2 + 18768^2 .

It is an emirp because it is prime and its reverse (940057567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 765750049 - 2¹¹ = 765748001 is a prime.

It is a super-5 number, since 5×765750049⁵ (a number of 46 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 765749987 and 765750014.

It is not a weakly prime, because it can be changed into another prime (765750079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382875024 + 382875025.

It is an arithmetic number, because the mean of its divisors is an integer number (382875025).

Almost surely, 2^765750049 is an apocalyptic number.

It is an amenable number.

765750049 is a deficient number, since it is larger than the sum of its proper divisors (1).

765750049 is an equidigital number, since it uses as much as digits as its factorization.

765750049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 765750049 is about 27672.1890894089. The cubic root of 765750049 is about 914.8762307829.

The spelling of 765750049 in words is "seven hundred sixty-five million, seven hundred fifty thousand, forty-nine".