67668007 has 16 divisors (see below), whose sum is σ = 79248672. Its totient is φ = 57093120.

The previous prime is 67667993. The next prime is 67668011. The reversal of 67668007 is 70086676.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67668007 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 (67668037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11173 + ... + 16129.

It is an arithmetic number, because the mean of its divisors is an integer number (4953042).

Almost surely, 2^67668007 is an apocalyptic number.

67668007 is a deficient number, since it is larger than the sum of its proper divisors (11580665).

67668007 is a wasteful number, since it uses less digits than its factorization.

67668007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 67668007 is about 8226.0565886699. The cubic root of 67668007 is about 407.5001708758.

The spelling of 67668007 in words is "sixty-seven million, six hundred sixty-eight thousand, seven".