20650673 has 4 divisors (see below), whose sum is σ = 20958960. Its totient is φ = 20342388.

The previous prime is 20650667. The next prime is 20650687. The reversal of 20650673 is 37605602.

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 20650673 - 2⁴ = 20650657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20650603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154043 + ... + 154176.

It is an arithmetic number, because the mean of its divisors is an integer number (5239740).

Almost surely, 2^20650673 is an apocalyptic number.

It is an amenable number.

20650673 is a deficient number, since it is larger than the sum of its proper divisors (308287).

20650673 is an equidigital number, since it uses as much as digits as its factorization.

20650673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308286.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 20650673 is about 4544.3011563936. The cubic root of 20650673 is about 274.3540674632.

The spelling of 20650673 in words is "twenty million, six hundred fifty thousand, six hundred seventy-three".