20797071 has 8 divisors (see below), whose sum is σ = 28479024. Its totient is φ = 13489920.

The previous prime is 20797057. The next prime is 20797109. The reversal of 20797071 is 17079702.

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

It is not a de Polignac number, because 20797071 - 2⁷ = 20796943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20797771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93570 + ... + 93791.

It is an arithmetic number, because the mean of its divisors is an integer number (3559878).

Almost surely, 2^20797071 is an apocalyptic number.

20797071 is a deficient number, since it is larger than the sum of its proper divisors (7681953).

20797071 is a wasteful number, since it uses less digits than its factorization.

20797071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187401.

The product of its (nonzero) digits is 6174, while the sum is 33.

The square root of 20797071 is about 4560.3805762239. The cubic root of 20797071 is about 275.0008639091. Note that the first 3 decimals are identical.

The spelling of 20797071 in words is "twenty million, seven hundred ninety-seven thousand, seventy-one".