20677873 has 4 divisors (see below), whose sum is σ = 20927088. Its totient is φ = 20428660.

The previous prime is 20677859. The next prime is 20677903. The reversal of 20677873 is 37877602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20677873 - 2¹³ = 20669681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20677823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124483 + ... + 124648.

It is an arithmetic number, because the mean of its divisors is an integer number (5231772).

Almost surely, 2^20677873 is an apocalyptic number.

It is an amenable number.

20677873 is a deficient number, since it is larger than the sum of its proper divisors (249215).

20677873 is an equidigital number, since it uses as much as digits as its factorization.

20677873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249214.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 20677873 is about 4547.2929309645. The cubic root of 20677873 is about 274.4744696191.

The spelling of 20677873 in words is "twenty million, six hundred seventy-seven thousand, eight hundred seventy-three".