20660527 has 2 divisors, whose sum is σ = 20660528. Its totient is φ = 20660526.

The previous prime is 20660501. The next prime is 20660567. The reversal of 20660527 is 72506602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20660527 - 2⁷ = 20660399 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20660495 and 20660504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20660567) 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 as a sum of consecutive naturals, namely, 10330263 + 10330264.

It is an arithmetic number, because the mean of its divisors is an integer number (10330264).

Almost surely, 2^20660527 is an apocalyptic number.

20660527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20660527 is an equidigital number, since it uses as much as digits as its factorization.

20660527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20660527 is about 4545.3852421989. The cubic root of 20660527 is about 274.3976988916.

The spelling of 20660527 in words is "twenty million, six hundred sixty thousand, five hundred twenty-seven".