20675673 has 6 divisors (see below), whose sum is σ = 29864874. Its totient is φ = 13783776.

The previous prime is 20675663. The next prime is 20675693. The reversal of 20675673 is 37657602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18636489 + 2039184 = 4317^2 + 1428^2 .

It is not a de Polignac number, because 20675673 - 2¹⁰ = 20674649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20675653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1148640 + ... + 1148657.

It is an arithmetic number, because the mean of its divisors is an integer number (4977479).

Almost surely, 2^20675673 is an apocalyptic number.

It is an amenable number.

20675673 is a deficient number, since it is larger than the sum of its proper divisors (9189201).

20675673 is a wasteful number, since it uses less digits than its factorization.

20675673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297303 (or 2297300 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 20675673 is about 4547.0510223660. The cubic root of 20675673 is about 274.4647351355.

The spelling of 20675673 in words is "twenty million, six hundred seventy-five thousand, six hundred seventy-three".