66722235 has 8 divisors (see below), whose sum is σ = 106755600. Its totient is φ = 35585184.

The previous prime is 66722213. The next prime is 66722291. The reversal of 66722235 is 53222766.

It is a happy number.

66722235 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66722235 - 2⁶ = 66722171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66722196 and 66722205.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2224060 + ... + 2224089.

It is an arithmetic number, because the mean of its divisors is an integer number (13344450).

Almost surely, 2^66722235 is an apocalyptic number.

66722235 is a deficient number, since it is larger than the sum of its proper divisors (40033365).

66722235 is a wasteful number, since it uses less digits than its factorization.

66722235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448157.

The product of its digits is 30240, while the sum is 33.

The square root of 66722235 is about 8168.3679520453. The cubic root of 66722235 is about 405.5927610272.

The spelling of 66722235 in words is "sixty-six million, seven hundred twenty-two thousand, two hundred thirty-five".