66468377 has 8 divisors (see below), whose sum is σ = 69472200. Its totient is φ = 63512064.

The previous prime is 66468359. The next prime is 66468379. The reversal of 66468377 is 77386466.

It can be written as a sum of positive squares in 4 ways, for example, as 143641 + 66324736 = 379^2 + 8144^2 .

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 66468377 - 2⁶ = 66468313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66468379) 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, 9002 + ... + 14627.

It is an arithmetic number, because the mean of its divisors is an integer number (8684025).

Almost surely, 2^66468377 is an apocalyptic number.

It is an amenable number.

66468377 is a deficient number, since it is larger than the sum of its proper divisors (3003823).

66468377 is a wasteful number, since it uses less digits than its factorization.

66468377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23755.

The product of its digits is 1016064, while the sum is 47.

The square root of 66468377 is about 8152.8140540552. The cubic root of 66468377 is about 405.0777212015.

The spelling of 66468377 in words is "sixty-six million, four hundred sixty-eight thousand, three hundred seventy-seven".