660070 has 16 divisors (see below), whose sum is σ = 1198800. Its totient is φ = 261664.

The previous prime is 660067. The next prime is 660071. The reversal of 660070 is 70066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (74925).

2⁶⁶⁰⁰⁷⁰ is an apocalyptic number.

660070 is a deficient number, since it is larger than the sum of its proper divisors (538730).

660070 is a wasteful number, since it uses less digits than its factorization.

660070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 660070 is about 812.4469213432. The cubic root of 660070 is about 87.0689548895.

It can be divided in two parts, 6600 and 70, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 660070 in words is "six hundred sixty thousand, seventy".