20967693 has 8 divisors (see below), whose sum is σ = 27984768. Its totient is φ = 13964544.

The previous prime is 20967689. The next prime is 20967707. The reversal of 20967693 is 39676902.

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

It is not a de Polignac number, because 20967693 - 2² = 20967689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20967643) 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, 780 + ... + 6522.

It is an arithmetic number, because the mean of its divisors is an integer number (3498096).

Almost surely, 2^20967693 is an apocalyptic number.

It is an amenable number.

20967693 is a deficient number, since it is larger than the sum of its proper divisors (7017075).

20967693 is a wasteful number, since it uses less digits than its factorization.

20967693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 20967693 is about 4579.0493554885. The cubic root of 20967693 is about 275.7508647643.

The spelling of 20967693 in words is "twenty million, nine hundred sixty-seven thousand, six hundred ninety-three".