777120738 has 16 divisors (see below), whose sum is σ = 1570265760. Its totient is φ = 256369536.

The previous prime is 777120737. The next prime is 777120749. The reversal of 777120738 is 837021777.

It is a self number, because there is not a number n which added to its sum of digits gives 777120738.

It is not an unprimeable number, because it can be changed into a prime (777120737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667048 + ... + 668211.

It is an arithmetic number, because the mean of its divisors is an integer number (98141610).

Almost surely, 2^777120738 is an apocalyptic number.

777120738 is an abundant number, since it is smaller than the sum of its proper divisors (793145022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

777120738 is a wasteful number, since it uses less digits than its factorization.

777120738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335361.

The product of its (nonzero) digits is 115248, while the sum is 42.

The square root of 777120738 is about 27876.8853712175. The cubic root of 777120738 is about 919.3823587543.

The spelling of 777120738 in words is "seven hundred seventy-seven million, one hundred twenty thousand, seven hundred thirty-eight".