777331338 has 32 divisors (see below), whose sum is σ = 1784405376. Its totient is φ = 221138688.

The previous prime is 777331333. The next prime is 777331349. The reversal of 777331338 is 833133777.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 777331338.

It is not an unprimeable number, because it can be changed into a prime (777331333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29931 + ... + 49502.

It is an arithmetic number, because the mean of its divisors is an integer number (55762668).

Almost surely, 2^777331338 is an apocalyptic number.

777331338 is an abundant number, since it is smaller than the sum of its proper divisors (1007074038).

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

777331338 is a wasteful number, since it uses less digits than its factorization.

777331338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79678.

The product of its digits is 222264, while the sum is 42.

The square root of 777331338 is about 27880.6624383281. The cubic root of 777331338 is about 919.4654022366.

The spelling of 777331338 in words is "seven hundred seventy-seven million, three hundred thirty-one thousand, three hundred thirty-eight".