2170464660 has 240 divisors, whose sum is σ = 8380665216. Its totient is φ = 457913088.

The previous prime is 2170464643. The next prime is 2170464701. The reversal of 2170464660 is 664640712.

2170464660 is a `hidden beast` number, since 2 + 1 + 7 + 0 + 4 + 646 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 140059 + ... + 154781.

Almost surely, 2^2170464660 is an apocalyptic number.

2170464660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2170464660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4190332608).

2170464660 is an abundant number, since it is smaller than the sum of its proper divisors (6210200556).

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

2170464660 is a wasteful number, since it uses less digits than its factorization.

2170464660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14764 (or 14753 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2170464660 is about 46588.2459425122. The cubic root of 2170464660 is about 1294.7449913542.

The spelling of 2170464660 in words is "two billion, one hundred seventy million, four hundred sixty-four thousand, six hundred sixty".