67407666 has 8 divisors (see below), whose sum is σ = 134815344. Its totient is φ = 22469220.

The previous prime is 67407661. The next prime is 67407667. The reversal of 67407666 is 66670476.

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

67407666 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67407661) 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, 5617300 + ... + 5617311.

It is an arithmetic number, because the mean of its divisors is an integer number (16851918).

Almost surely, 2^67407666 is an apocalyptic number.

67407666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67407666 is a wasteful number, since it uses less digits than its factorization.

67407666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11234616.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 67407666 is about 8210.2171713055. The cubic root of 67407666 is about 406.9769036712.

The spelling of 67407666 in words is "sixty-seven million, four hundred seven thousand, six hundred sixty-six".