66160020 has 96 divisors (see below), whose sum is σ = 195955200. Its totient is φ = 16651264.

The previous prime is 66160013. The next prime is 66160027. The reversal of 66160020 is 2006166.

66160020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66160013) and next prime (66160027).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160027) 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 31 ways as a sum of consecutive naturals, for example, 81376 + ... + 82184.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^66160020 is an apocalyptic number.

66160020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66160020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

66160020 is an abundant number, since it is smaller than the sum of its proper divisors (129795180).

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

66160020 is a wasteful number, since it uses less digits than its factorization.

66160020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 895 counting only the distinct ones).

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

The square root of 66160020 is about 8133.8809924906. The cubic root of 66160020 is about 404.4503441312.

Adding to 66160020 its reverse (2006166), we get a palindrome (68166186).

The spelling of 66160020 in words is "sixty-six million, one hundred sixty thousand, twenty".