664070 has 16 divisors (see below), whose sum is σ = 1304208. Its totient is φ = 241440.

The previous prime is 664067. The next prime is 664091. The reversal of 664070 is 70466.

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 664070.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2909 + ... + 3128.

It is an arithmetic number, because the mean of its divisors is an integer number (81513).

2⁶⁶⁴⁰⁷⁰ is an apocalyptic number.

664070 is a deficient number, since it is larger than the sum of its proper divisors (640138).

664070 is a wasteful number, since it uses less digits than its factorization.

664070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055.

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

The square root of 664070 is about 814.9049024273. The cubic root of 664070 is about 87.2444790337.

The spelling of 664070 in words is "six hundred sixty-four thousand, seventy".