20606361 has 8 divisors (see below), whose sum is σ = 27496224. Its totient is φ = 13727040.

The previous prime is 20606357. The next prime is 20606371. The reversal of 20606361 is 16360602.

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

It is not a de Polignac number, because 20606361 - 2² = 20606357 is a prime.

It is a super-2 number, since 2×20606361² = 849244227324642, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20606371) 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, 5665 + ... + 8561.

It is an arithmetic number, because the mean of its divisors is an integer number (3437028).

Almost surely, 2^20606361 is an apocalyptic number.

It is an amenable number.

20606361 is a deficient number, since it is larger than the sum of its proper divisors (6889863).

20606361 is a wasteful number, since it uses less digits than its factorization.

20606361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 20606361 is about 4539.4229809525. The cubic root of 20606361 is about 274.1576915646.

Adding to 20606361 its reverse (16360602), we get a palindrome (36966963).

The spelling of 20606361 in words is "twenty million, six hundred six thousand, three hundred sixty-one".