68946967667 has 4 divisors (see below), whose sum is σ = 68947537296. Its totient is φ = 68946398040.

The previous prime is 68946967651. The next prime is 68946967669. The reversal of 68946967667 is 76676964986.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68946967667 - 2⁴ = 68946967651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68946967594 and 68946967603.

It is not an unprimeable number, because it can be changed into a prime (68946967669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23084 + ... + 372057.

It is an arithmetic number, because the mean of its divisors is an integer number (17236884324).

Almost surely, 2^68946967667 is an apocalyptic number.

68946967667 is a deficient number, since it is larger than the sum of its proper divisors (569629).

68946967667 is a wasteful number, since it uses less digits than its factorization.

68946967667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569628.

The product of its digits is 987614208, while the sum is 74.

The spelling of 68946967667 in words is "sixty-eight billion, nine hundred forty-six million, nine hundred sixty-seven thousand, six hundred sixty-seven".