20061613 has 16 divisors (see below), whose sum is σ = 24022656. Its totient is φ = 16511040.

The previous prime is 20061611. The next prime is 20061623. The reversal of 20061613 is 31616002.

It is not a de Polignac number, because 20061613 - 2¹ = 20061611 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 (20061611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6256 + ... + 8902.

It is an arithmetic number, because the mean of its divisors is an integer number (1501416).

Almost surely, 2^20061613 is an apocalyptic number.

It is an amenable number.

20061613 is a deficient number, since it is larger than the sum of its proper divisors (3961043).

20061613 is a wasteful number, since it uses less digits than its factorization.

20061613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2724.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20061613 is about 4479.0192006733. The cubic root of 20061613 is about 271.7202149369.

Adding to 20061613 its reverse (31616002), we get a palindrome (51677615).

The spelling of 20061613 in words is "twenty million, sixty-one thousand, six hundred thirteen".