66476827 has 4 divisors (see below), whose sum is σ = 68273536. Its totient is φ = 64680120.

The previous prime is 66476821. The next prime is 66476833. The reversal of 66476827 is 72867466.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66476821) and next prime (66476833).

It is a cyclic number.

It is not a de Polignac number, because 66476827 - 2⁷ = 66476699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66476821) 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 3 ways as a sum of consecutive naturals, for example, 898299 + ... + 898372.

It is an arithmetic number, because the mean of its divisors is an integer number (17068384).

Almost surely, 2^66476827 is an apocalyptic number.

66476827 is a deficient number, since it is larger than the sum of its proper divisors (1796709).

66476827 is a wasteful number, since it uses less digits than its factorization.

66476827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796708.

The product of its digits is 677376, while the sum is 46.

The square root of 66476827 is about 8153.3322635595. The cubic root of 66476827 is about 405.0948860642.

The spelling of 66476827 in words is "sixty-six million, four hundred seventy-six thousand, eight hundred twenty-seven".