3316667778 has 48 divisors (see below), whose sum is σ = 7574767200. Its totient is φ = 1045923840.

The previous prime is 3316667777. The next prime is 3316667803. The reversal of 3316667778 is 8777666133.

It is a happy number.

It is a super-2 number, since 2×3316667778² = 22000570299246914568, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3316667777) 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 23 ways as a sum of consecutive naturals, for example, 256693 + ... + 269303.

It is an arithmetic number, because the mean of its divisors is an integer number (157807650).

Almost surely, 2^3316667778 is an apocalyptic number.

3316667778 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3316667778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3787383600).

3316667778 is an abundant number, since it is smaller than the sum of its proper divisors (4258099422).

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

3316667778 is a wasteful number, since it uses less digits than its factorization.

3316667778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13407 (or 13404 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The square root of 3316667778 is about 57590.5181258165. The cubic root of 3316667778 is about 1491.3079184352.

The spelling of 3316667778 in words is "three billion, three hundred sixteen million, six hundred sixty-seven thousand, seven hundred seventy-eight".