770866765 has 12 divisors (see below), whose sum is σ = 976291164. Its totient is φ = 584234496.

The previous prime is 770866763. The next prime is 770866771. The reversal of 770866765 is 567668077.

It can be written as a sum of positive squares in 2 ways, for example, as 521574244 + 249292521 = 22838^2 + 15789^2 .

It is not a de Polignac number, because 770866765 - 2¹ = 770866763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770866763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211732 + ... + 215341.

It is an arithmetic number, because the mean of its divisors is an integer number (81357597).

Almost surely, 2^770866765 is an apocalyptic number.

It is an amenable number.

770866765 is a deficient number, since it is larger than the sum of its proper divisors (205424399).

770866765 is a wasteful number, since it uses less digits than its factorization.

770866765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427116 (or 427097 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 52.

The square root of 770866765 is about 27764.4874795124. The cubic root of 770866765 is about 916.9094329279.

The spelling of 770866765 in words is "seven hundred seventy million, eight hundred sixty-six thousand, seven hundred sixty-five".