2820817668 has 24 divisors (see below), whose sum is σ = 6618277120. Its totient is φ = 935076960.

The previous prime is 2820817651. The next prime is 2820817697. The reversal of 2820817668 is 8667180282.

It is a super-2 number, since 2×2820817668² = 15914024632201916448, which contains 22 as substring.

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, 647188 + ... + 651531.

Almost surely, 2^2820817668 is an apocalyptic number.

It is an amenable number.

2820817668 is an abundant number, since it is smaller than the sum of its proper divisors (3797459452).

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

2820817668 is a wasteful number, since it uses less digits than its factorization.

2820817668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298907 (or 1298905 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 2820817668 is about 53111.3704210313. The cubic root of 2820817668 is about 1412.9441805404.

The spelling of 2820817668 in words is "two billion, eight hundred twenty million, eight hundred seventeen thousand, six hundred sixty-eight".