66474 has 16 divisors (see below), whose sum is σ = 147840. Its totient is φ = 22140.

The previous prime is 66467. The next prime is 66491. The reversal of 66474 is 47466.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 669.

It is an arithmetic number, because the mean of its divisors is an integer number (9240).

2⁶⁶⁴⁷⁴ is an apocalyptic number.

66474 is an abundant number, since it is smaller than the sum of its proper divisors (81366).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73920).

66474 is a wasteful number, since it uses less digits than its factorization.

66474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1236 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 66474 is about 257.8255223984. The cubic root of 66474 is about 40.5089143615.

The spelling of 66474 in words is "sixty-six thousand, four hundred seventy-four".