63355993 has 4 divisors (see below), whose sum is σ = 63382480. Its totient is φ = 63329508.

The previous prime is 63355979. The next prime is 63355997. The reversal of 63355993 is 39955336.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63355993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63355997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9255 + ... + 14572.

It is an arithmetic number, because the mean of its divisors is an integer number (15845620).

Almost surely, 2^63355993 is an apocalyptic number.

It is an amenable number.

63355993 is a deficient number, since it is larger than the sum of its proper divisors (26487).

63355993 is a wasteful number, since it uses less digits than its factorization.

63355993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26486.

The product of its digits is 328050, while the sum is 43.

The square root of 63355993 is about 7959.6477937155. The cubic root of 63355993 is about 398.6537931505.

The spelling of 63355993 in words is "sixty-three million, three hundred fifty-five thousand, nine hundred ninety-three".