67666301 has 4 divisors (see below), whose sum is σ = 67929852. Its totient is φ = 67402752.

The previous prime is 67666297. The next prime is 67666343. The reversal of 67666301 is 10366676.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32501401 + 35164900 = 5701^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 67666301 - 2² = 67666297 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 (67666351) 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, 131390 + ... + 131903.

It is an arithmetic number, because the mean of its divisors is an integer number (16982463).

Almost surely, 2^67666301 is an apocalyptic number.

It is an amenable number.

67666301 is a deficient number, since it is larger than the sum of its proper divisors (263551).

67666301 is a wasteful number, since it uses less digits than its factorization.

67666301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263550.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 67666301 is about 8225.9528931304. The cubic root of 67666301 is about 407.4967463075.

The spelling of 67666301 in words is "sixty-seven million, six hundred sixty-six thousand, three hundred one".