20708069 has 8 divisors (see below), whose sum is σ = 21257280. Its totient is φ = 20162016.

The previous prime is 20708021. The next prime is 20708099. The reversal of 20708069 is 96080702.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20708069 is a prime.

It is a super-2 number, since 2×20708069² = 857648243417522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20708099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18329 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (2657160).

Almost surely, 2^20708069 is an apocalyptic number.

It is an amenable number.

20708069 is a deficient number, since it is larger than the sum of its proper divisors (549211).

20708069 is a wasteful number, since it uses less digits than its factorization.

20708069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20708069 is about 4550.6119368718. The cubic root of 20708069 is about 274.6080101112.

The spelling of 20708069 in words is "twenty million, seven hundred eight thousand, sixty-nine".