67345666679 has 8 divisors (see below), whose sum is σ = 68283447120. Its totient is φ = 66413200000.

The previous prime is 67345666621. The next prime is 67345666681. The reversal of 67345666679 is 97666654376.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67345666679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67345666279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1302914 + ... + 1353615.

It is an arithmetic number, because the mean of its divisors is an integer number (8535430890).

Almost surely, 2^67345666679 is an apocalyptic number.

67345666679 is a deficient number, since it is larger than the sum of its proper divisors (937780441).

67345666679 is a wasteful number, since it uses less digits than its factorization.

67345666679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656881.

The product of its digits is 205752960, while the sum is 65.

The spelling of 67345666679 in words is "sixty-seven billion, three hundred forty-five million, six hundred sixty-six thousand, six hundred seventy-nine".