660701660 has 48 divisors (see below), whose sum is σ = 1401351840. Its totient is φ = 261653760.

The previous prime is 660701597. The next prime is 660701669. The reversal of 660701660 is 66107066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660701669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220990 + ... + 1221530.

It is an arithmetic number, because the mean of its divisors is an integer number (29194830).

Almost surely, 2^660701660 is an apocalyptic number.

It is an amenable number.

660701660 is an abundant number, since it is smaller than the sum of its proper divisors (740650180).

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

660701660 is a wasteful number, since it uses less digits than its factorization.

660701660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 660701660 is about 25704.1175689810. The cubic root of 660701660 is about 870.9671984459.

The spelling of 660701660 in words is "six hundred sixty million, seven hundred one thousand, six hundred sixty".