67331689 has 4 divisors (see below), whose sum is σ = 67535440. Its totient is φ = 67127940.

The previous prime is 67331681. The next prime is 67331699. The reversal of 67331689 is 98613376.

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 67331689 - 2³ = 67331681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67331681) 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, 101379 + ... + 102040.

It is an arithmetic number, because the mean of its divisors is an integer number (16883860).

Almost surely, 2^67331689 is an apocalyptic number.

It is an amenable number.

67331689 is a deficient number, since it is larger than the sum of its proper divisors (203751).

67331689 is a wasteful number, since it uses less digits than its factorization.

67331689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203750.

The product of its digits is 163296, while the sum is 43.

The square root of 67331689 is about 8205.5888880689. The cubic root of 67331689 is about 406.8239413027.

The spelling of 67331689 in words is "sixty-seven million, three hundred thirty-one thousand, six hundred eighty-nine".