63655823 has 8 divisors (see below), whose sum is σ = 79363200. Its totient is φ = 49601880.

The previous prime is 63655811. The next prime is 63655843. The reversal of 63655823 is 32855636.

It is a happy number.

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 63655823 - 2¹⁴ = 63639439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63655843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413273 + ... + 413426.

It is an arithmetic number, because the mean of its divisors is an integer number (9920400).

Almost surely, 2^63655823 is an apocalyptic number.

63655823 is a deficient number, since it is larger than the sum of its proper divisors (15707377).

63655823 is a wasteful number, since it uses less digits than its factorization.

63655823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826717.

The product of its digits is 129600, while the sum is 38.

The square root of 63655823 is about 7978.4599391111. The cubic root of 63655823 is about 399.2816753799.

The spelling of 63655823 in words is "sixty-three million, six hundred fifty-five thousand, eight hundred twenty-three".