67072303 has 4 divisors (see below), whose sum is σ = 68632168. Its totient is φ = 65512440.

The previous prime is 67072297. The next prime is 67072307. The reversal of 67072303 is 30327076.

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

It is a cyclic number.

It is not a de Polignac number, because 67072303 - 2⁹ = 67071791 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 (67072307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779868 + ... + 779953.

It is an arithmetic number, because the mean of its divisors is an integer number (17158042).

Almost surely, 2^67072303 is an apocalyptic number.

67072303 is a deficient number, since it is larger than the sum of its proper divisors (1559865).

67072303 is a wasteful number, since it uses less digits than its factorization.

67072303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559864.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 67072303 is about 8189.7681896376. The cubic root of 67072303 is about 406.3008580747.

Adding to 67072303 its reverse (30327076), we get a palindrome (97399379).

The spelling of 67072303 in words is "sixty-seven million, seventy-two thousand, three hundred three".