20601066 has 8 divisors (see below), whose sum is σ = 41202144. Its totient is φ = 6867020.

The previous prime is 20601037. The next prime is 20601079. The reversal of 20601066 is 66010602.

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

20601066 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1716750 + ... + 1716761.

It is an arithmetic number, because the mean of its divisors is an integer number (5150268).

Almost surely, 2^20601066 is an apocalyptic number.

20601066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20601066 is a wasteful number, since it uses less digits than its factorization.

20601066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433516.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20601066 is about 4538.8397195759. The cubic root of 20601066 is about 274.1342070795.

Adding to 20601066 its reverse (66010602), we get a palindrome (86611668).

The spelling of 20601066 in words is "twenty million, six hundred one thousand, sixty-six".