63666849 has 8 divisors (see below), whose sum is σ = 85180032. Its totient is φ = 42299120.

The previous prime is 63666787. The next prime is 63666851. The reversal of 63666849 is 94866636.

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 63666849 - 2⁸ = 63666593 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63666798 and 63666807.

It is not an unprimeable number, because it can be changed into a prime (63666149) 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, 35337 + ... + 37094.

It is an arithmetic number, because the mean of its divisors is an integer number (10647504).

Almost surely, 2^63666849 is an apocalyptic number.

It is an amenable number.

63666849 is a deficient number, since it is larger than the sum of its proper divisors (21513183).

63666849 is a wasteful number, since it uses less digits than its factorization.

63666849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72727.

The product of its digits is 1119744, while the sum is 48.

The square root of 63666849 is about 7979.1508946754. The cubic root of 63666849 is about 399.3047276076.

The spelling of 63666849 in words is "sixty-three million, six hundred sixty-six thousand, eight hundred forty-nine".