20779367 has 8 divisors (see below), whose sum is σ = 23840256. Its totient is φ = 17741592.

The previous prime is 20779361. The next prime is 20779397. The reversal of 20779367 is 76397702.

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

It is a cyclic number.

It is not a de Polignac number, because 20779367 - 2⁶ = 20779303 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 (20779361) 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 7 ways as a sum of consecutive naturals, for example, 3803 + ... + 7484.

It is an arithmetic number, because the mean of its divisors is an integer number (2980032).

Almost surely, 2^20779367 is an apocalyptic number.

20779367 is a deficient number, since it is larger than the sum of its proper divisors (3060889).

20779367 is a wasteful number, since it uses less digits than its factorization.

20779367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11557.

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 20779367 is about 4558.4390968839. The cubic root of 20779367 is about 274.9228080865.

The spelling of 20779367 in words is "twenty million, seven hundred seventy-nine thousand, three hundred sixty-seven".