63509474 has 16 divisors (see below), whose sum is σ = 109055808. Its totient is φ = 27172752.

The previous prime is 63509431. The next prime is 63509477. The reversal of 63509474 is 47490536.

63509474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63509477) 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 in 7 ways as a sum of consecutive naturals, for example, 5669 + ... + 12615.

It is an arithmetic number, because the mean of its divisors is an integer number (6815988).

Almost surely, 2^63509474 is an apocalyptic number.

63509474 is a deficient number, since it is larger than the sum of its proper divisors (45546334).

63509474 is a wasteful number, since it uses less digits than its factorization.

63509474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7609.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 63509474 is about 7969.2831547135. The cubic root of 63509474 is about 398.9754488111.

The spelling of 63509474 in words is "sixty-three million, five hundred nine thousand, four hundred seventy-four".