63774447 has 16 divisors (see below), whose sum is σ = 93499392. Its totient is φ = 38344320.

The previous prime is 63774443. The next prime is 63774467. The reversal of 63774447 is 74447736.

It is not a de Polignac number, because 63774447 - 2² = 63774443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63774399 and 63774408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63774443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418 + ... + 11799.

It is an arithmetic number, because the mean of its divisors is an integer number (5843712).

Almost surely, 2^63774447 is an apocalyptic number.

63774447 is a deficient number, since it is larger than the sum of its proper divisors (29724945).

63774447 is a wasteful number, since it uses less digits than its factorization.

63774447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15358.

The product of its digits is 395136, while the sum is 42.

The square root of 63774447 is about 7985.8904951170. The cubic root of 63774447 is about 399.5295448134.

Subtracting 63774447 from its reverse (74447736), we obtain a square (10673289 = 3267²).

The spelling of 63774447 in words is "sixty-three million, seven hundred seventy-four thousand, four hundred forty-seven".