2224666778 has 8 divisors (see below), whose sum is σ = 3342629268. Its totient is φ = 1110457024.

The previous prime is 2224666777. The next prime is 2224666793. The reversal of 2224666778 is 8776664222.

It can be written as a sum of positive squares in 2 ways, for example, as 2189584849 + 35081929 = 46793^2 + 5923^2 .

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

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2224666771) 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, 936701 + ... + 939072.

Almost surely, 2^2224666778 is an apocalyptic number.

2224666778 is a deficient number, since it is larger than the sum of its proper divisors (1117962490).

2224666778 is a wasteful number, since it uses less digits than its factorization.

2224666778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876368.

The product of its digits is 2709504, while the sum is 50.

The square root of 2224666778 is about 47166.3733818915. The cubic root of 2224666778 is about 1305.4342106523.

The spelling of 2224666778 in words is "two billion, two hundred twenty-four million, six hundred sixty-six thousand, seven hundred seventy-eight".