20706297 has 8 divisors (see below), whose sum is σ = 27711360. Its totient is φ = 13752720.

The previous prime is 20706293. The next prime is 20706307. The reversal of 20706297 is 79260702.

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

It is not a de Polignac number, because 20706297 - 2² = 20706293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20706293) 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, 11922 + ... + 13547.

It is an arithmetic number, because the mean of its divisors is an integer number (3463920).

Almost surely, 2^20706297 is an apocalyptic number.

It is an amenable number.

20706297 is a deficient number, since it is larger than the sum of its proper divisors (7005063).

20706297 is a wasteful number, since it uses less digits than its factorization.

20706297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25743.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20706297 is about 4550.4172336172. The cubic root of 20706297 is about 274.6001771054.

Adding to 20706297 its reverse (79260702), we get a palindrome (99966999).

The spelling of 20706297 in words is "twenty million, seven hundred six thousand, two hundred ninety-seven".