3278664816 has 40 divisors (see below), whose sum is σ = 9679868544. Its totient is φ = 936761280.

The previous prime is 3278664797. The next prime is 3278664821. The reversal of 3278664816 is 6184668723.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878630 + ... + 4879301.

Almost surely, 2^3278664816 is an apocalyptic number.

It is an amenable number.

3278664816 is an abundant number, since it is smaller than the sum of its proper divisors (6401203728).

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

3278664816 is a wasteful number, since it uses less digits than its factorization.

3278664816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9757949 (or 9757943 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 3278664816 is about 57259.6264046492. The cubic root of 3278664816 is about 1485.5901346878.

The spelling of 3278664816 in words is "three billion, two hundred seventy-eight million, six hundred sixty-four thousand, eight hundred sixteen".