20769673 has 4 divisors (see below), whose sum is σ = 20780560. Its totient is φ = 20758788.

The previous prime is 20769649. The next prime is 20769689. The reversal of 20769673 is 37696702.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20769673 - 2¹⁷ = 20638601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20769643) 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, 1743 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (5195140).

Almost surely, 2^20769673 is an apocalyptic number.

It is an amenable number.

20769673 is a deficient number, since it is larger than the sum of its proper divisors (10887).

20769673 is an equidigital number, since it uses as much as digits as its factorization.

20769673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 20769673 is about 4557.3756702734. The cubic root of 20769673 is about 274.8800490642.

The spelling of 20769673 in words is "twenty million, seven hundred sixty-nine thousand, six hundred seventy-three".