20694106 has 4 divisors (see below), whose sum is σ = 31041162. Its totient is φ = 10347052.

The previous prime is 20694103. The next prime is 20694119. The reversal of 20694106 is 60149602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12313081 + 8381025 = 3509^2 + 2895^2 .

It is not an unprimeable number, because it can be changed into a prime (20694101) 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 as a sum of consecutive naturals, namely, 5173525 + ... + 5173528.

Almost surely, 2^20694106 is an apocalyptic number.

20694106 is a deficient number, since it is larger than the sum of its proper divisors (10347056).

20694106 is a wasteful number, since it uses less digits than its factorization.

20694106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10347055.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20694106 is about 4549.0774888982. The cubic root of 20694106 is about 274.5462754998.

The spelling of 20694106 in words is "twenty million, six hundred ninety-four thousand, one hundred six".