66946229 has 8 divisors (see below), whose sum is σ = 76577088. Its totient is φ = 57332160.

The previous prime is 66946211. The next prime is 66946241. The reversal of 66946229 is 92264966.

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 66946229 - 2⁸ = 66945973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66946229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66946249) 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, 6014 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (9572136).

Almost surely, 2^66946229 is an apocalyptic number.

It is an amenable number.

66946229 is a deficient number, since it is larger than the sum of its proper divisors (9630859).

66946229 is a wasteful number, since it uses less digits than its factorization.

66946229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8395.

The product of its digits is 279936, while the sum is 44.

The square root of 66946229 is about 8182.0675259985. The cubic root of 66946229 is about 406.0461274809.

The spelling of 66946229 in words is "sixty-six million, nine hundred forty-six thousand, two hundred twenty-nine".