67006666667 has 8 divisors (see below), whose sum is σ = 68821228176. Its totient is φ = 65192293152.

The previous prime is 67006666651. The next prime is 67006666669. The reversal of 67006666667 is 76666660076.

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

It is a cyclic number.

It is not a de Polignac number, because 67006666667 - 2⁴ = 67006666651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67006666669) 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, 968408 + ... + 1035290.

It is an arithmetic number, because the mean of its divisors is an integer number (8602653522).

Almost surely, 2^67006666667 is an apocalyptic number.

67006666667 is a deficient number, since it is larger than the sum of its proper divisors (1814561509).

67006666667 is a wasteful number, since it uses less digits than its factorization.

67006666667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93997.

The product of its (nonzero) digits is 13716864, while the sum is 56.

The spelling of 67006666667 in words is "sixty-seven billion, six million, six hundred sixty-six thousand, six hundred sixty-seven".