20065634 has 8 divisors (see below), whose sum is σ = 31682640. Its totient is φ = 9504756.

The previous prime is 20065621. The next prime is 20065657. The reversal of 20065634 is 43656002.

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

It is an unprimeable number.

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, 263984 + ... + 264059.

It is an arithmetic number, because the mean of its divisors is an integer number (3960330).

Almost surely, 2^20065634 is an apocalyptic number.

20065634 is a deficient number, since it is larger than the sum of its proper divisors (11617006).

20065634 is a wasteful number, since it uses less digits than its factorization.

20065634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528064.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20065634 is about 4479.4680487754. The cubic root of 20065634 is about 271.7383675816.

The spelling of 20065634 in words is "twenty million, sixty-five thousand, six hundred thirty-four".