20168693 has 8 divisors (see below), whose sum is σ = 20933376. Its totient is φ = 19411200.

The previous prime is 20168689. The next prime is 20168699. The reversal of 20168693 is 39686102.

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 20168693 - 2² = 20168689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4298 + ... + 7668.

It is an arithmetic number, because the mean of its divisors is an integer number (2616672).

Almost surely, 2^20168693 is an apocalyptic number.

It is an amenable number.

20168693 is a deficient number, since it is larger than the sum of its proper divisors (764683).

20168693 is a wasteful number, since it uses less digits than its factorization.

20168693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 20168693 is about 4490.9568022861. The cubic root of 20168693 is about 272.2027980464.

The spelling of 20168693 in words is "twenty million, one hundred sixty-eight thousand, six hundred ninety-three".