67328213 has 4 divisors (see below), whose sum is σ = 67506240. Its totient is φ = 67150188.

The previous prime is 67328207. The next prime is 67328231. The reversal of 67328213 is 31282376.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67328213 - 2¹⁰ = 67327189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67328213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67328203) 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, 88445 + ... + 89202.

It is an arithmetic number, because the mean of its divisors is an integer number (16876560).

Almost surely, 2^67328213 is an apocalyptic number.

It is an amenable number.

67328213 is a deficient number, since it is larger than the sum of its proper divisors (178027).

67328213 is a wasteful number, since it uses less digits than its factorization.

67328213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178026.

The product of its digits is 12096, while the sum is 32.

The square root of 67328213 is about 8205.3770784773. The cubic root of 67328213 is about 406.8169404171.

The spelling of 67328213 in words is "sixty-seven million, three hundred twenty-eight thousand, two hundred thirteen".