64873503 has 12 divisors (see below), whose sum is σ = 94673488. Its totient is φ = 42802560.

The previous prime is 64873463. The next prime is 64873507. The reversal of 64873503 is 30537846.

It is a happy number.

64873503 is a `hidden beast` number, since 648 + 7 + 3 + 5 + 0 + 3 = 666.

It is not a de Polignac number, because 64873503 - 2⁹ = 64872991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64873507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36283 + ... + 38028.

Almost surely, 2^64873503 is an apocalyptic number.

64873503 is a deficient number, since it is larger than the sum of its proper divisors (29799985).

64873503 is a wasteful number, since it uses less digits than its factorization.

64873503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74414 (or 74411 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 64873503 is about 8054.4089168604. The cubic root of 64873503 is about 401.8115809666.

The spelling of 64873503 in words is "sixty-four million, eight hundred seventy-three thousand, five hundred three".