20966433 has 4 divisors (see below), whose sum is σ = 27955248. Its totient is φ = 13977620.

The previous prime is 20966431. The next prime is 20966459. The reversal of 20966433 is 33466902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20966433 - 2¹ = 20966431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20966394 and 20966403.

It is not an unprimeable number, because it can be changed into a prime (20966431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3494403 + ... + 3494408.

It is an arithmetic number, because the mean of its divisors is an integer number (6988812).

Almost surely, 2^20966433 is an apocalyptic number.

It is an amenable number.

20966433 is a deficient number, since it is larger than the sum of its proper divisors (6988815).

20966433 is an equidigital number, since it uses as much as digits as its factorization.

20966433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988814.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 20966433 is about 4578.9117702790. The cubic root of 20966433 is about 275.7453411388.

The spelling of 20966433 in words is "twenty million, nine hundred sixty-six thousand, four hundred thirty-three".