20068887 has 4 divisors (see below), whose sum is σ = 26758520. Its totient is φ = 13379256.

The previous prime is 20068871. The next prime is 20068901. The reversal of 20068887 is 78886002.

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

It is not a de Polignac number, because 20068887 - 2⁴ = 20068871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20068987) 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, 3344812 + ... + 3344817.

It is an arithmetic number, because the mean of its divisors is an integer number (6689630).

Almost surely, 2^20068887 is an apocalyptic number.

20068887 is a deficient number, since it is larger than the sum of its proper divisors (6689633).

20068887 is an equidigital number, since it uses as much as digits as its factorization.

20068887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689632.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 20068887 is about 4479.8311352103. The cubic root of 20068887 is about 271.7530513463.

The spelling of 20068887 in words is "twenty million, sixty-eight thousand, eight hundred eighty-seven".