20016061 has 8 divisors (see below), whose sum is σ = 22299480. Its totient is φ = 17838912.

The previous prime is 20016053. The next prime is 20016067. The reversal of 20016061 is 16061002.

It can be written as a sum of positive squares in 4 ways, for example, as 2325625 + 17690436 = 1525^2 + 4206^2 .

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

It is not a de Polignac number, because 20016061 - 2³ = 20016053 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 (20016067) 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, 26170 + ... + 26923.

It is an arithmetic number, because the mean of its divisors is an integer number (2787435).

Almost surely, 2^20016061 is an apocalyptic number.

It is an amenable number.

20016061 is a deficient number, since it is larger than the sum of its proper divisors (2283419).

20016061 is a wasteful number, since it uses less digits than its factorization.

20016061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53135.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 20016061 is about 4473.9312690295. The cubic root of 20016061 is about 271.5144026537.

Adding to 20016061 its reverse (16061002), we get a palindrome (36077063).

It can be divided in two parts, 200 and 16061, that added together give a palindrome (16261).

The spelling of 20016061 in words is "twenty million, sixteen thousand, sixty-one".