67384891396 has 9 divisors (see below), whose sum is σ = 117924468501. Its totient is φ = 33692186112.

The previous prime is 67384891393. The next prime is 67384891429. The reversal of 67384891396 is 69319848376.

It is a happy number.

The square root of 67384891396 is 259586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 57049322500 + 10335568896 = 238850^2 + 101664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67384891393) 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 2 ways as a sum of consecutive naturals, for example, 454276 + ... + 584068.

Almost surely, 2^67384891396 is an apocalyptic number.

67384891396 is the 259586-th square number.

It is an amenable number.

67384891396 is a deficient number, since it is larger than the sum of its proper divisors (50539577105).

67384891396 is an frugal number, since it uses more digits than its factorization.

67384891396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259590 (or 129795 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 64.

Multiplying 67384891396 by its sum of digits (64), we get a square (4312633049344 = 2076688²).

The spelling of 67384891396 in words is "sixty-seven billion, three hundred eighty-four million, eight hundred ninety-one thousand, three hundred ninety-six".