679778122 has 8 divisors (see below), whose sum is σ = 1019933316. Its totient is φ = 339800352.

The previous prime is 679778111. The next prime is 679778123. The reversal of 679778122 is 221877976.

It can be written as a sum of positive squares in 2 ways, for example, as 484924441 + 194853681 = 22021^2 + 13959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (679778123) 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, 34323 + ... + 50374.

Almost surely, 2^679778122 is an apocalyptic number.

679778122 is a deficient number, since it is larger than the sum of its proper divisors (340155194).

679778122 is a wasteful number, since it uses less digits than its factorization.

679778122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88712.

The product of its digits is 592704, while the sum is 49.

The square root of 679778122 is about 26072.5549572726. The cubic root of 679778122 is about 879.2702809122.

The spelling of 679778122 in words is "six hundred seventy-nine million, seven hundred seventy-eight thousand, one hundred twenty-two".