770878516 has 12 divisors (see below), whose sum is σ = 1349312580. Its totient is φ = 385360640.

The previous prime is 770878489. The next prime is 770878517. The reversal of 770878516 is 615878077.

It can be written as a sum of positive squares in 2 ways, for example, as 190550416 + 580328100 = 13804^2 + 24090^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 770878516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770878517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6180 + ... + 39748.

It is an arithmetic number, because the mean of its divisors is an integer number (112442715).

Almost surely, 2^770878516 is an apocalyptic number.

It is an amenable number.

770878516 is a deficient number, since it is larger than the sum of its proper divisors (578434064).

770878516 is a wasteful number, since it uses less digits than its factorization.

770878516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39314 (or 39312 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 49.

The square root of 770878516 is about 27764.6990979553. The cubic root of 770878516 is about 916.9140919898.

The spelling of 770878516 in words is "seven hundred seventy million, eight hundred seventy-eight thousand, five hundred sixteen".