20704065 has 8 divisors (see below), whose sum is σ = 33126528. Its totient is φ = 11042160.

The previous prime is 20704043. The next prime is 20704081. The reversal of 20704065 is 56040702.

It is a happy number.

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

It is not a de Polignac number, because 20704065 - 2⁷ = 20703937 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690121 + ... + 690150.

It is an arithmetic number, because the mean of its divisors is an integer number (4140816).

Almost surely, 2^20704065 is an apocalyptic number.

It is an amenable number.

20704065 is a deficient number, since it is larger than the sum of its proper divisors (12422463).

20704065 is a wasteful number, since it uses less digits than its factorization.

20704065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380279.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20704065 is about 4550.1719747719. The cubic root of 20704065 is about 274.5903100648.

Adding to 20704065 its reverse (56040702), we get a palindrome (76744767).

The spelling of 20704065 in words is "twenty million, seven hundred four thousand, sixty-five".