66256229 has 8 divisors (see below), whose sum is σ = 72871680. Its totient is φ = 59857776.

The previous prime is 66256193. The next prime is 66256241. The reversal of 66256229 is 92265266.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66256229 - 2¹² = 66252133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66256192 and 66256201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66256279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53609 + ... + 54830.

It is an arithmetic number, because the mean of its divisors is an integer number (9108960).

Almost surely, 2^66256229 is an apocalyptic number.

It is an amenable number.

66256229 is a deficient number, since it is larger than the sum of its proper divisors (6615451).

66256229 is a wasteful number, since it uses less digits than its factorization.

66256229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108499.

The product of its digits is 77760, while the sum is 38.

The square root of 66256229 is about 8139.7929334842. The cubic root of 66256229 is about 404.6462979047.

The spelling of 66256229 in words is "sixty-six million, two hundred fifty-six thousand, two hundred twenty-nine".