66449339 has 8 divisors (see below), whose sum is σ = 72576768. Its totient is φ = 60336360.

The previous prime is 66449329. The next prime is 66449347. The reversal of 66449339 is 93394466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66449339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66449339.

It is not an unprimeable number, because it can be changed into a prime (66449329) 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, 7514 + ... + 13760.

It is an arithmetic number, because the mean of its divisors is an integer number (9072096).

Almost surely, 2^66449339 is an apocalyptic number.

66449339 is a deficient number, since it is larger than the sum of its proper divisors (6127429).

66449339 is a wasteful number, since it uses less digits than its factorization.

66449339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7225.

The product of its digits is 419904, while the sum is 44.

The square root of 66449339 is about 8151.6463981211. The cubic root of 66449339 is about 405.0390431293.

The spelling of 66449339 in words is "sixty-six million, four hundred forty-nine thousand, three hundred thirty-nine".