66418467 has 8 divisors (see below), whose sum is σ = 88670400. Its totient is φ = 44222760.

The previous prime is 66418427. The next prime is 66418489. The reversal of 66418467 is 76481466.

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

It is not a de Polignac number, because 66418467 - 2⁶ = 66418403 is a prime.

It is a super-2 number, since 2×66418467² = 8822825517260178, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (66418427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11217 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (11083800).

Almost surely, 2^66418467 is an apocalyptic number.

66418467 is a deficient number, since it is larger than the sum of its proper divisors (22251933).

66418467 is a wasteful number, since it uses less digits than its factorization.

66418467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28113.

The product of its digits is 193536, while the sum is 42.

The square root of 66418467 is about 8149.7525729313. The cubic root of 66418467 is about 404.9763071035.

The spelling of 66418467 in words is "sixty-six million, four hundred eighteen thousand, four hundred sixty-seven".