63648418 has 4 divisors (see below), whose sum is σ = 95472630. Its totient is φ = 31824208.

The previous prime is 63648413. The next prime is 63648421. The reversal of 63648418 is 81484636.

63648418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50083929 + 13564489 = 7077^2 + 3683^2 .

It is a super-2 number, since 2×63648418² = 8102242227805448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63648413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15912103 + ... + 15912106.

Almost surely, 2^63648418 is an apocalyptic number.

63648418 is a deficient number, since it is larger than the sum of its proper divisors (31824212).

63648418 is a wasteful number, since it uses less digits than its factorization.

63648418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31824211.

The product of its digits is 110592, while the sum is 40.

The square root of 63648418 is about 7977.9958636239. The cubic root of 63648418 is about 399.2661921383.

The spelling of 63648418 in words is "sixty-three million, six hundred forty-eight thousand, four hundred eighteen".