63509738 has 16 divisors (see below), whose sum is σ = 98118216. Its totient is φ = 30812160.

The previous prime is 63509711. The next prime is 63509749. The reversal of 63509738 is 83790536.

63509738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41822089 + 21687649 = 6467^2 + 4657^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 63509695 and 63509704.

It is an unprimeable number.

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, 13820 + ... + 17832.

Almost surely, 2^63509738 is an apocalyptic number.

63509738 is a deficient number, since it is larger than the sum of its proper divisors (34608478).

63509738 is a wasteful number, since it uses less digits than its factorization.

63509738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 63509738 is about 7969.2997182939. The cubic root of 63509738 is about 398.9760016387.

The spelling of 63509738 in words is "sixty-three million, five hundred nine thousand, seven hundred thirty-eight".