67216503 has 4 divisors (see below), whose sum is σ = 89622008. Its totient is φ = 44811000.

The previous prime is 67216489. The next prime is 67216537. The reversal of 67216503 is 30561276.

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

It is not a de Polignac number, because 67216503 - 2¹³ = 67208311 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67216573) 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 3 ways as a sum of consecutive naturals, for example, 11202748 + ... + 11202753.

It is an arithmetic number, because the mean of its divisors is an integer number (22405502).

Almost surely, 2^67216503 is an apocalyptic number.

67216503 is a deficient number, since it is larger than the sum of its proper divisors (22405505).

67216503 is a wasteful number, since it uses less digits than its factorization.

67216503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22405504.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 67216503 is about 8198.5671309077. The cubic root of 67216503 is about 406.5918209326.

Adding to 67216503 its reverse (30561276), we get a palindrome (97777779).

The spelling of 67216503 in words is "sixty-seven million, two hundred sixteen thousand, five hundred three".