765338977 has 6 divisors (see below), whose sum is σ = 828740022. Its totient is φ = 706466592.

The previous prime is 765338927. The next prime is 765338993. The reversal of 765338977 is 779833567.

765338977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5564881 + 759774096 = 2359^2 + 27564^2 .

It is a de Polignac number, because none of the positive numbers 2^k-765338977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (765338927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2264148 + ... + 2264485.

It is an arithmetic number, because the mean of its divisors is an integer number (138123337).

Almost surely, 2^765338977 is an apocalyptic number.

It is an amenable number.

765338977 is a deficient number, since it is larger than the sum of its proper divisors (63401045).

765338977 is a wasteful number, since it uses less digits than its factorization.

765338977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528659 (or 4528646 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 55.

The square root of 765338977 is about 27664.7605628532. The cubic root of 765338977 is about 914.7124927074.

The spelling of 765338977 in words is "seven hundred sixty-five million, three hundred thirty-eight thousand, nine hundred seventy-seven".