20606206 has 8 divisors (see below), whose sum is σ = 32253264. Its totient is φ = 9855120.

The previous prime is 20606197. The next prime is 20606219. The reversal of 20606206 is 60260602.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223935 + ... + 224026.

It is an arithmetic number, because the mean of its divisors is an integer number (4031658).

Almost surely, 2^20606206 is an apocalyptic number.

20606206 is a deficient number, since it is larger than the sum of its proper divisors (11647058).

20606206 is a wasteful number, since it uses less digits than its factorization.

20606206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447986.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20606206 is about 4539.4059082660. The cubic root of 20606206 is about 274.1570041628.

Adding to 20606206 its reverse (60260602), we get a palindrome (80866808).

The spelling of 20606206 in words is "twenty million, six hundred six thousand, two hundred six".