66352245 has 24 divisors (see below), whose sum is σ = 109722528. Its totient is φ = 34238880.

The previous prime is 66352243. The next prime is 66352271. The reversal of 66352245 is 54225366.

It is not a de Polignac number, because 66352245 - 2¹ = 66352243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66352243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12114 + ... + 16716.

It is an arithmetic number, because the mean of its divisors is an integer number (4571772).

Almost surely, 2^66352245 is an apocalyptic number.

It is an amenable number.

66352245 is a deficient number, since it is larger than the sum of its proper divisors (43370283).

66352245 is a wasteful number, since it uses less digits than its factorization.

66352245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4673 (or 4642 counting only the distinct ones).

The product of its digits is 43200, while the sum is 33.

The square root of 66352245 is about 8145.6887369946. The cubic root of 66352245 is about 404.8416695538.

The spelling of 66352245 in words is "sixty-six million, three hundred fifty-two thousand, two hundred forty-five".