3720566322 has 54 divisors (see below), whose sum is σ = 8867472159. Its totient is φ = 1126581720.

The previous prime is 3720566299. The next prime is 3720566327. The reversal of 3720566322 is 2236650273.

It is a happy number.

3720566322 is a `hidden beast` number, since 3 + 72 + 0 + 566 + 3 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1860283161 + 1860283161 = 43131^2 + 43131^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43131.

It is a super-2 number, since 2×3720566322² = 27685227512801215368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3720566327) 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 26 ways as a sum of consecutive naturals, for example, 2845993 + ... + 2847299.

Almost surely, 2^3720566322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3720566322

3720566322 is an abundant number, since it is smaller than the sum of its proper divisors (5146905837).

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

3720566322 is a wasteful number, since it uses less digits than its factorization.

3720566322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 3720566322 is about 60996.4451587140. The cubic root of 3720566322 is about 1549.5408035507.

The spelling of 3720566322 in words is "three billion, seven hundred twenty million, five hundred sixty-six thousand, three hundred twenty-two".