20716627 has 2 divisors, whose sum is σ = 20716628. Its totient is φ = 20716626.

The previous prime is 20716609. The next prime is 20716639. The reversal of 20716627 is 72661702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20716627 - 2¹⁹ = 20192339 is a prime.

It is not a weakly prime, because it can be changed into another prime (20716687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10358313 + 10358314.

It is an arithmetic number, because the mean of its divisors is an integer number (10358314).

Almost surely, 2^20716627 is an apocalyptic number.

20716627 is a deficient number, since it is larger than the sum of its proper divisors (1).

20716627 is an equidigital number, since it uses as much as digits as its factorization.

20716627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20716627 is about 4551.5521528375. The cubic root of 20716627 is about 274.6458338806.

The spelling of 20716627 in words is "twenty million, seven hundred sixteen thousand, six hundred twenty-seven".