20968895 has 8 divisors (see below), whose sum is σ = 25589520. Its totient is φ = 16490560.

The previous prime is 20968889. The next prime is 20968901. The reversal of 20968895 is 59886902.

It is an interprime number because it is at equal distance from previous prime (20968889) and next prime (20968901).

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

It is not a de Polignac number, because 20968895 - 2⁴ = 20968879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35246 + ... + 35835.

It is an arithmetic number, because the mean of its divisors is an integer number (3198690).

Almost surely, 2^20968895 is an apocalyptic number.

20968895 is a deficient number, since it is larger than the sum of its proper divisors (4620625).

20968895 is an equidigital number, since it uses as much as digits as its factorization.

20968895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71145.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 20968895 is about 4579.1806035578. The cubic root of 20968895 is about 275.7561339214.

The spelling of 20968895 in words is "twenty million, nine hundred sixty-eight thousand, eight hundred ninety-five".