66052206 has 64 divisors (see below), whose sum is σ = 161625600. Its totient is φ = 19994040.

The previous prime is 66052201. The next prime is 66052213. The reversal of 66052206 is 60225066.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 66052206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66052201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71415 + ... + 72333.

It is an arithmetic number, because the mean of its divisors is an integer number (2525400).

Almost surely, 2^66052206 is an apocalyptic number.

66052206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 66052206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80812800).

66052206 is an abundant number, since it is smaller than the sum of its proper divisors (95573394).

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

66052206 is a wasteful number, since it uses less digits than its factorization.

66052206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 66052206 is about 8127.2508266941. The cubic root of 66052206 is about 404.2305280084.

The spelling of 66052206 in words is "sixty-six million, fifty-two thousand, two hundred six".