1660684410 has 384 divisors, whose sum is σ = 5809950720. Its totient is φ = 327888000.

The previous prime is 1660684397. The next prime is 1660684411. The reversal of 1660684410 is 144860661.

1660684410 is a `hidden beast` number, since 1 + 6 + 606 + 8 + 4 + 41 + 0 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1660684411) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 10997835 + ... + 10997985.

It is an arithmetic number, because the mean of its divisors is an integer number (15130080).

Almost surely, 2^1660684410 is an apocalyptic number.

1660684410 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 1660684410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2904975360).

1660684410 is an abundant number, since it is smaller than the sum of its proper divisors (4149266310).

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

1660684410 is a wasteful number, since it uses less digits than its factorization.

1660684410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1660684410 is about 40751.4958007679. The cubic root of 1660684410 is about 1184.2108509660.

The spelling of 1660684410 in words is "one billion, six hundred sixty million, six hundred eighty-four thousand, four hundred ten".