66466231 has 8 divisors (see below), whose sum is σ = 74047680. Its totient is φ = 59237472.

The previous prime is 66466223. The next prime is 66466249. The reversal of 66466231 is 13266466.

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 66466231 - 2³ = 66466223 is a prime.

It is a super-2 number, since 2×66466231² = 8835519726690722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66466031) 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, 87775 + ... + 88528.

It is an arithmetic number, because the mean of its divisors is an integer number (9255960).

Almost surely, 2^66466231 is an apocalyptic number.

66466231 is a deficient number, since it is larger than the sum of its proper divisors (7581449).

66466231 is a wasteful number, since it uses less digits than its factorization.

66466231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176345.

The product of its digits is 31104, while the sum is 34.

The square root of 66466231 is about 8152.6824419942. The cubic root of 66466231 is about 405.0733617041.

The spelling of 66466231 in words is "sixty-six million, four hundred sixty-six thousand, two hundred thirty-one".