66301249 has 8 divisors (see below), whose sum is σ = 79067520. Its totient is φ = 54358656.

The previous prime is 66301247. The next prime is 66301253. The reversal of 66301249 is 94210366.

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 66301249 - 2¹ = 66301247 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66301249.

It is not an unprimeable number, because it can be changed into a prime (66301243) 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, 205744 + ... + 206065.

It is an arithmetic number, because the mean of its divisors is an integer number (9883440).

Almost surely, 2^66301249 is an apocalyptic number.

It is an amenable number.

66301249 is a deficient number, since it is larger than the sum of its proper divisors (12766271).

66301249 is a wasteful number, since it uses less digits than its factorization.

66301249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411839.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 66301249 is about 8142.5578904912. The cubic root of 66301249 is about 404.7379272860.

The spelling of 66301249 in words is "sixty-six million, three hundred one thousand, two hundred forty-nine".