20682668 has 6 divisors (see below), whose sum is σ = 36194676. Its totient is φ = 10341332.

The previous prime is 20682653. The next prime is 20682671. The reversal of 20682668 is 86628602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2585330 + ... + 2585337.

It is an arithmetic number, because the mean of its divisors is an integer number (6032446).

Almost surely, 2^20682668 is an apocalyptic number.

It is an amenable number.

20682668 is a deficient number, since it is larger than the sum of its proper divisors (15512008).

20682668 is a wasteful number, since it uses less digits than its factorization.

20682668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170671 (or 5170669 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 20682668 is about 4547.8201371646. The cubic root of 20682668 is about 274.4956839765.

The spelling of 20682668 in words is "twenty million, six hundred eighty-two thousand, six hundred sixty-eight".