66200449 has 8 divisors (see below), whose sum is σ = 75998720. Its totient is φ = 56487456.

The previous prime is 66200447. The next prime is 66200467. The reversal of 66200449 is 94400266.

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 66200449 - 2¹ = 66200447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66200449.

It is not an unprimeable number, because it can be changed into a prime (66200443) 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, 19644 + ... + 22765.

It is an arithmetic number, because the mean of its divisors is an integer number (9499840).

Almost surely, 2^66200449 is an apocalyptic number.

It is an amenable number.

66200449 is a deficient number, since it is larger than the sum of its proper divisors (9798271).

66200449 is a wasteful number, since it uses less digits than its factorization.

66200449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42639.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 66200449 is about 8136.3658349413. The cubic root of 66200449 is about 404.5327110622.

The spelling of 66200449 in words is "sixty-six million, two hundred thousand, four hundred forty-nine".