20071065 has 32 divisors (see below), whose sum is σ = 38301696. Its totient is φ = 8775360.

The previous prime is 20071039. The next prime is 20071097. The reversal of 20071065 is 56017002.

It is not a de Polignac number, because 20071065 - 2⁹ = 20070553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1741 + ... + 6570.

It is an arithmetic number, because the mean of its divisors is an integer number (1196928).

Almost surely, 2^20071065 is an apocalyptic number.

It is an amenable number.

20071065 is a deficient number, since it is larger than the sum of its proper divisors (18230631).

20071065 is a wasteful number, since it uses less digits than its factorization.

20071065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8349.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 20071065 is about 4480.0742181352. The cubic root of 20071065 is about 271.7628817658.

Adding to 20071065 its reverse (56017002), we get a palindrome (76088067).

The spelling of 20071065 in words is "twenty million, seventy-one thousand, sixty-five".