21960683 has 2 divisors, whose sum is σ = 21960684. Its totient is φ = 21960682.

The previous prime is 21960677. The next prime is 21960727. The reversal of 21960683 is 38606912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21960683 - 2⁶ = 21960619 is a prime.

It is not a weakly prime, because it can be changed into another prime (21960613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10980341 + 10980342.

It is an arithmetic number, because the mean of its divisors is an integer number (10980342).

Almost surely, 2^21960683 is an apocalyptic number.

21960683 is a deficient number, since it is larger than the sum of its proper divisors (1).

21960683 is an equidigital number, since it uses as much as digits as its factorization.

21960683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 21960683 is about 4686.2226793015. Note that the first 3 decimals coincide. The cubic root of 21960683 is about 280.0369126506.

The spelling of 21960683 in words is "twenty-one million, nine hundred sixty thousand, six hundred eighty-three".