63504539 has 6 divisors (see below), whose sum is σ = 73872684. Its totient is φ = 54432420.

The previous prime is 63504521. The next prime is 63504559. The reversal of 63504539 is 93540536.

It is not a de Polignac number, because 63504539 - 2¹⁶ = 63439003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63504499 and 63504508.

It is not an unprimeable number, because it can be changed into a prime (63504559) 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 5 ways as a sum of consecutive naturals, for example, 647957 + ... + 648054.

It is an arithmetic number, because the mean of its divisors is an integer number (12312114).

Almost surely, 2^63504539 is an apocalyptic number.

63504539 is a deficient number, since it is larger than the sum of its proper divisors (10368145).

63504539 is a wasteful number, since it uses less digits than its factorization.

63504539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296025 (or 1296018 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 63504539 is about 7968.9735223553. The cubic root of 63504539 is about 398.9651144220.

The spelling of 63504539 in words is "sixty-three million, five hundred four thousand, five hundred thirty-nine".