20065685 has 8 divisors (see below), whose sum is σ = 24135840. Its totient is φ = 16014544.

The previous prime is 20065657. The next prime is 20065733. The reversal of 20065685 is 58656002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20065685 - 2⁶ = 20065621 is a prime.

It is a congruent 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, 2315 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (3016980).

Almost surely, 2^20065685 is an apocalyptic number.

It is an amenable number.

20065685 is a deficient number, since it is larger than the sum of its proper divisors (4070155).

20065685 is an equidigital number, since it uses as much as digits as its factorization.

20065685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9507.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 20065685 is about 4479.4737414120. The cubic root of 20065685 is about 271.7385978035.

The spelling of 20065685 in words is "twenty million, sixty-five thousand, six hundred eighty-five".