765725969 has 2 divisors, whose sum is σ = 765725970. Its totient is φ = 765725968.

The previous prime is 765725957. The next prime is 765725977. The reversal of 765725969 is 969527567.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 760380625 + 5345344 = 27575^2 + 2312^2 .

It is a cyclic number.

It is not a de Polignac number, because 765725969 - 2⁴ = 765725953 is a prime.

It is a super-2 number, since 2×765725969² = 1172672519201977922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (765728969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382862984 + 382862985.

It is an arithmetic number, because the mean of its divisors is an integer number (382862985).

Almost surely, 2^765725969 is an apocalyptic number.

It is an amenable number.

765725969 is a deficient number, since it is larger than the sum of its proper divisors (1).

765725969 is an equidigital number, since it uses as much as digits as its factorization.

765725969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 56.

The square root of 765725969 is about 27671.7539921126. The cubic root of 765725969 is about 914.8666408606.

The spelling of 765725969 in words is "seven hundred sixty-five million, seven hundred twenty-five thousand, nine hundred sixty-nine".