20773667 has 4 divisors (see below), whose sum is σ = 20893920. Its totient is φ = 20653416.

The previous prime is 20773663. The next prime is 20773679. The reversal of 20773667 is 76637702.

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 20773667 - 2² = 20773663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20773667.

It is not an unprimeable number, because it can be changed into a prime (20773661) 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, 59867 + ... + 60212.

It is an arithmetic number, because the mean of its divisors is an integer number (5223480).

Almost surely, 2^20773667 is an apocalyptic number.

20773667 is a deficient number, since it is larger than the sum of its proper divisors (120253).

20773667 is a wasteful number, since it uses less digits than its factorization.

20773667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120252.

The product of its (nonzero) digits is 74088, while the sum is 38.

The square root of 20773667 is about 4557.8138399895. The cubic root of 20773667 is about 274.8976677102.

The spelling of 20773667 in words is "twenty million, seven hundred seventy-three thousand, six hundred sixty-seven".