20650667 has 2 divisors, whose sum is σ = 20650668. Its totient is φ = 20650666.

The previous prime is 20650661. The next prime is 20650687. The reversal of 20650667 is 76605602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20650667 - 2⁶ = 20650603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20650661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10325333 + 10325334.

It is an arithmetic number, because the mean of its divisors is an integer number (10325334).

Almost surely, 2^20650667 is an apocalyptic number.

20650667 is a deficient number, since it is larger than the sum of its proper divisors (1).

20650667 is an equidigital number, since it uses as much as digits as its factorization.

20650667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20650667 is about 4544.3004962260. The cubic root of 20650667 is about 274.3540408922.

The spelling of 20650667 in words is "twenty million, six hundred fifty thousand, six hundred sixty-seven".