20875623 has 8 divisors (see below), whose sum is σ = 29299200. Its totient is φ = 13184568.

The previous prime is 20875619. The next prime is 20875627. The reversal of 20875623 is 32657802.

It is an interprime number because it is at equal distance from previous prime (20875619) and next prime (20875627).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20875623 - 2² = 20875619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20875627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183063 + ... + 183176.

It is an arithmetic number, because the mean of its divisors is an integer number (3662400).

Almost surely, 2^20875623 is an apocalyptic number.

20875623 is a deficient number, since it is larger than the sum of its proper divisors (8423577).

20875623 is a wasteful number, since it uses less digits than its factorization.

20875623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366261.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20875623 is about 4568.9848982022. The cubic root of 20875623 is about 275.3466614420.

The spelling of 20875623 in words is "twenty million, eight hundred seventy-five thousand, six hundred twenty-three".