1664560170 has 288 divisors, whose sum is σ = 5631679872. Its totient is φ = 332128512.

The previous prime is 1664560169. The next prime is 1664560187. The reversal of 1664560170 is 710654661.

1664560170 is a `hidden beast` number, since 1 + 6 + 6 + 45 + 601 + 7 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2956309 + ... + 2956871.

It is an arithmetic number, because the mean of its divisors is an integer number (19554444).

Almost surely, 2^1664560170 is an apocalyptic number.

1664560170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1664560170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2815839936).

1664560170 is an abundant number, since it is smaller than the sum of its proper divisors (3967119702).

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

1664560170 is a wasteful number, since it uses less digits than its factorization.

1664560170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1664560170 is about 40799.0216794472. The cubic root of 1664560170 is about 1185.1313853148.

The spelling of 1664560170 in words is "one billion, six hundred sixty-four million, five hundred sixty thousand, one hundred seventy".