20607 has 4 divisors (see below), whose sum is σ = 27480. Its totient is φ = 13736.

The previous prime is 20599. The next prime is 20611. The reversal of 20607 is 70602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20607 - 2³ = 20599 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20607.

It is not an unprimeable number, because it can be changed into a prime (20627) 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, 3432 + ... + 3437.

It is an arithmetic number, because the mean of its divisors is an integer number (6870).

2²⁰⁶⁰⁷ is an apocalyptic number.

20607 is a deficient number, since it is larger than the sum of its proper divisors (6873).

20607 is an equidigital number, since it uses as much as digits as its factorization.

20607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 20607 is about 143.5513845283. The cubic root of 20607 is about 27.4160525398.

The spelling of 20607 in words is "twenty thousand, six hundred seven".