20622061 has 8 divisors (see below), whose sum is σ = 21253400. Its totient is φ = 19994688.

The previous prime is 20622059. The next prime is 20622067. The reversal of 20622061 is 16022602.

It can be written as a sum of positive squares in 4 ways, for example, as 6220036 + 14402025 = 2494^2 + 3795^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20622061 - 2¹ = 20622059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622067) 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, 12115 + ... + 13711.

It is an arithmetic number, because the mean of its divisors is an integer number (2656675).

Almost surely, 2^20622061 is an apocalyptic number.

It is an amenable number.

20622061 is a deficient number, since it is larger than the sum of its proper divisors (631339).

20622061 is a wasteful number, since it uses less digits than its factorization.

20622061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20622061 is about 4541.1519463678. The cubic root of 20622061 is about 274.2273008643.

Adding to 20622061 its reverse (16022602), we get a palindrome (36644663).

The spelling of 20622061 in words is "twenty million, six hundred twenty-two thousand, sixty-one".