20692673 has 8 divisors (see below), whose sum is σ = 21033000. Its totient is φ = 20355328.

The previous prime is 20692667. The next prime is 20692681. The reversal of 20692673 is 37629602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 693889 + 19998784 = 833^2 + 4472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20692673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20692613) 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, 16223 + ... + 17451.

It is an arithmetic number, because the mean of its divisors is an integer number (2629125).

Almost surely, 2^20692673 is an apocalyptic number.

20692673 is the 2432-nd centered heptagonal number.

It is an amenable number.

20692673 is a deficient number, since it is larger than the sum of its proper divisors (340327).

20692673 is a wasteful number, since it uses less digits than its factorization.

20692673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 20692673 is about 4548.9199817099. The cubic root of 20692673 is about 274.5399382059.

The spelling of 20692673 in words is "twenty million, six hundred ninety-two thousand, six hundred seventy-three".