20676827 has 4 divisors (see below), whose sum is σ = 20792520. Its totient is φ = 20561136.

The previous prime is 20676809. The next prime is 20676847. The reversal of 20676827 is 72867602.

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 20676827 - 2¹⁶ = 20611291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20676847) 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, 57578 + ... + 57935.

It is an arithmetic number, because the mean of its divisors is an integer number (5198130).

Almost surely, 2^20676827 is an apocalyptic number.

20676827 is a deficient number, since it is larger than the sum of its proper divisors (115693).

20676827 is a wasteful number, since it uses less digits than its factorization.

20676827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115692.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 20676827 is about 4547.1779160266. The cubic root of 20676827 is about 274.4698414007.

The spelling of 20676827 in words is "twenty million, six hundred seventy-six thousand, eight hundred twenty-seven".