20613066 has 16 divisors (see below), whose sum is σ = 41925600. Its totient is φ = 6754448.

The previous prime is 20613053. The next prime is 20613067. The reversal of 20613066 is 66031602.

It is not an unprimeable number, because it can be changed into a prime (20613067) 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 7 ways as a sum of consecutive naturals, for example, 28761 + ... + 29468.

It is an arithmetic number, because the mean of its divisors is an integer number (2620350).

Almost surely, 2^20613066 is an apocalyptic number.

20613066 is an abundant number, since it is smaller than the sum of its proper divisors (21312534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20613066 is a wasteful number, since it uses less digits than its factorization.

20613066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58293.

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

The square root of 20613066 is about 4540.1614508737. The cubic root of 20613066 is about 274.1874239367.

Adding to 20613066 its reverse (66031602), we get a palindrome (86644668).

The spelling of 20613066 in words is "twenty million, six hundred thirteen thousand, sixty-six".