20330659 has 4 divisors (see below), whose sum is σ = 20365200. Its totient is φ = 20296120.

The previous prime is 20330647. The next prime is 20330671. The reversal of 20330659 is 95603302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95603302 = 2 ⋅47801651.

It is an interprime number because it is at equal distance from previous prime (20330647) and next prime (20330671).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20330659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20330059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16372 + ... + 17569.

It is an arithmetic number, because the mean of its divisors is an integer number (5091300).

Almost surely, 2^20330659 is an apocalyptic number.

20330659 is a deficient number, since it is larger than the sum of its proper divisors (34541).

20330659 is an equidigital number, since it uses as much as digits as its factorization.

20330659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34540.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 20330659 is about 4508.9532044589. The cubic root of 20330659 is about 272.9295036390.

The spelling of 20330659 in words is "twenty million, three hundred thirty thousand, six hundred fifty-nine".