66222296 has 64 divisors (see below), whose sum is σ = 151008000. Its totient is φ = 26593920.

The previous prime is 66222269. The next prime is 66222301. The reversal of 66222296 is 69222266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115691 + ... + 116261.

It is an arithmetic number, because the mean of its divisors is an integer number (2359500).

Almost surely, 2^66222296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66222296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75504000).

66222296 is an abundant number, since it is smaller than the sum of its proper divisors (84785704).

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

66222296 is a wasteful number, since it uses less digits than its factorization.

66222296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 708 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 66222296 is about 8137.7082769045. The cubic root of 66222296 is about 404.5772065011.

The spelling of 66222296 in words is "sixty-six million, two hundred twenty-two thousand, two hundred ninety-six".