20606386 has 16 divisors (see below), whose sum is σ = 31696704. Its totient is φ = 10044144.

The previous prime is 20606371. The next prime is 20606419. The reversal of 20606386 is 68360602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13056 + ... + 14548.

It is an arithmetic number, because the mean of its divisors is an integer number (1981044).

Almost surely, 2^20606386 is an apocalyptic number.

20606386 is a deficient number, since it is larger than the sum of its proper divisors (11090318).

20606386 is a wasteful number, since it uses less digits than its factorization.

20606386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20606386 is about 4539.4257346056. The cubic root of 20606386 is about 274.1578024355.

Adding to 20606386 its reverse (68360602), we get a palindrome (88966988).

The spelling of 20606386 in words is "twenty million, six hundred six thousand, three hundred eighty-six".