67666010 has 8 divisors (see below), whose sum is σ = 121798836. Its totient is φ = 27066400.

The previous prime is 67666003. The next prime is 67666013. The reversal of 67666010 is 1066676.

It can be written as a sum of positive squares in 2 ways, for example, as 60109009 + 7557001 = 7753^2 + 2749^2 .

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

It is not an unprimeable number, because it can be changed into a prime (67666013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383291 + ... + 3383310.

Almost surely, 2^67666010 is an apocalyptic number.

67666010 is a deficient number, since it is larger than the sum of its proper divisors (54132826).

67666010 is a wasteful number, since it uses less digits than its factorization.

67666010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766608.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 67666010 is about 8225.9352051910. The cubic root of 67666010 is about 407.4961621579.

The spelling of 67666010 in words is "sixty-seven million, six hundred sixty-six thousand, ten".