20969611 has 8 divisors (see below), whose sum is σ = 22618400. Its totient is φ = 19325952.

The previous prime is 20969527. The next prime is 20969623. The reversal of 20969611 is 11696902.

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 20969611 - 2⁹ = 20969099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20969411) 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, 14290 + ... + 15688.

It is an arithmetic number, because the mean of its divisors is an integer number (2827300).

Almost surely, 2^20969611 is an apocalyptic number.

20969611 is a deficient number, since it is larger than the sum of its proper divisors (1648789).

20969611 is a wasteful number, since it uses less digits than its factorization.

20969611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 20969611 is about 4579.2587828163. The cubic root of 20969611 is about 275.7592725250.

The spelling of 20969611 in words is "twenty million, nine hundred sixty-nine thousand, six hundred eleven".