20065697 has 4 divisors (see below), whose sum is σ = 20107056. Its totient is φ = 20024340.

The previous prime is 20065657. The next prime is 20065733. The reversal of 20065697 is 79656002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20065697 - 2¹⁶ = 20000161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20065607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19943 + ... + 20924.

It is an arithmetic number, because the mean of its divisors is an integer number (5026764).

Almost surely, 2^20065697 is an apocalyptic number.

It is an amenable number.

20065697 is a deficient number, since it is larger than the sum of its proper divisors (41359).

20065697 is an equidigital number, since it uses as much as digits as its factorization.

20065697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41358.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 20065697 is about 4479.4750808549. The cubic root of 20065697 is about 271.7386519733.

The spelling of 20065697 in words is "twenty million, sixty-five thousand, six hundred ninety-seven".