20102659 has 2 divisors, whose sum is σ = 20102660. Its totient is φ = 20102658.

The previous prime is 20102647. The next prime is 20102671. The reversal of 20102659 is 95620102.

It is a balanced prime because it is at equal distance from previous prime (20102647) and next prime (20102671).

It is a cyclic number.

It is not a de Polignac number, because 20102659 - 2¹¹ = 20100611 is a prime.

It is not a weakly prime, because it can be changed into another prime (20102609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051329 + 10051330.

It is an arithmetic number, because the mean of its divisors is an integer number (10051330).

Almost surely, 2^20102659 is an apocalyptic number.

20102659 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102659 is an equidigital number, since it uses as much as digits as its factorization.

20102659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20102659 is about 4483.5988892853. The cubic root of 20102659 is about 271.9054016120.

The spelling of 20102659 in words is "twenty million, one hundred two thousand, six hundred fifty-nine".