66322345 has 16 divisors (see below), whose sum is σ = 81881280. Its totient is φ = 51548224.

The previous prime is 66322343. The next prime is 66322349. The reversal of 66322345 is 54322366.

66322345 = 285² + 286² + ... + 605².

It is a happy number.

It is not a de Polignac number, because 66322345 - 2¹ = 66322343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66322343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27186 + ... + 29524.

It is an arithmetic number, because the mean of its divisors is an integer number (5117580).

Almost surely, 2^66322345 is an apocalyptic number.

It is an amenable number.

66322345 is a deficient number, since it is larger than the sum of its proper divisors (15558935).

66322345 is a wasteful number, since it uses less digits than its factorization.

66322345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504.

The product of its digits is 25920, while the sum is 31.

The square root of 66322345 is about 8143.8532034903. The cubic root of 66322345 is about 404.7808497850.

The spelling of 66322345 in words is "sixty-six million, three hundred twenty-two thousand, three hundred forty-five".