66470 has 24 divisors (see below), whose sum is σ = 132624. Its totient is φ = 23936.

The previous prime is 66467. The next prime is 66491. The reversal of 66470 is 7466.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an Ulam number.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66470.

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 11 ways as a sum of consecutive naturals, for example, 2879 + ... + 2901.

It is an arithmetic number, because the mean of its divisors is an integer number (5526).

2⁶⁶⁴⁷⁰ is an apocalyptic number.

66470 is a deficient number, since it is larger than the sum of its proper divisors (66154).

66470 is a wasteful number, since it uses less digits than its factorization.

66470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 66470 is about 257.8177650978. The cubic root of 66470 is about 40.5081018187.

The spelling of 66470 in words is "sixty-six thousand, four hundred seventy".