20066695 has 32 divisors (see below), whose sum is σ = 28408320. Its totient is φ = 13453440.

The previous prime is 20066689. The next prime is 20066699. The reversal of 20066695 is 59666002.

It is not a de Polignac number, because 20066695 - 2³ = 20066687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20066695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066699) 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 31 ways as a sum of consecutive naturals, for example, 36412 + ... + 36958.

It is an arithmetic number, because the mean of its divisors is an integer number (887760).

Almost surely, 2^20066695 is an apocalyptic number.

20066695 is a deficient number, since it is larger than the sum of its proper divisors (8341625).

20066695 is a wasteful number, since it uses less digits than its factorization.

20066695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20066695 is about 4479.5864764507. The cubic root of 20066695 is about 271.7431570195.

The spelling of 20066695 in words is "twenty million, sixty-six thousand, six hundred ninety-five".