63774993 has 4 divisors (see below), whose sum is σ = 85033328. Its totient is φ = 42516660.

The previous prime is 63774989. The next prime is 63775027. The reversal of 63774993 is 39947736.

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 not a de Polignac number, because 63774993 - 2² = 63774989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63774913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10629163 + ... + 10629168.

It is an arithmetic number, because the mean of its divisors is an integer number (21258332).

Almost surely, 2^63774993 is an apocalyptic number.

It is an amenable number.

63774993 is a deficient number, since it is larger than the sum of its proper divisors (21258335).

63774993 is a wasteful number, since it uses less digits than its factorization.

63774993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21258334.

The product of its digits is 857304, while the sum is 48.

The square root of 63774993 is about 7985.9246803360. The cubic root of 63774993 is about 399.5306849906.

The spelling of 63774993 in words is "sixty-three million, seven hundred seventy-four thousand, nine hundred ninety-three".