665070 has 32 divisors (see below), whose sum is σ = 1824768. Its totient is φ = 151968.

The previous prime is 665069. The next prime is 665089. The reversal of 665070 is 70566.

It is a self number, because there is not a number n which added to its sum of digits gives 665070.

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 665070.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374 + ... + 1793.

It is an arithmetic number, because the mean of its divisors is an integer number (57024).

2⁶⁶⁵⁰⁷⁰ is an apocalyptic number.

665070 is an abundant number, since it is smaller than the sum of its proper divisors (1159698).

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

665070 is a wasteful number, since it uses less digits than its factorization.

665070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 665070 is about 815.5182401394. The cubic root of 665070 is about 87.2882498826.

The spelling of 665070 in words is "six hundred sixty-five thousand, seventy".