1660883040 has 288 divisors, whose sum is σ = 5848446240. Its totient is φ = 429047808.

The previous prime is 1660883011. The next prime is 1660883057. The reversal of 1660883040 is 403880661.

It is a happy number.

1660883040 is a `hidden beast` number, since 1 + 6 + 608 + 8 + 3 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a junction number, because it is equal to n+sod(n) for n = 1660882986 and 1660883004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9600394 + ... + 9600566.

It is an arithmetic number, because the mean of its divisors is an integer number (20307105).

Almost surely, 2^1660883040 is an apocalyptic number.

1660883040 is a gapful number since it is divisible by the number (10) 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 1660883040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2924223120).

1660883040 is an abundant number, since it is smaller than the sum of its proper divisors (4187563200).

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

1660883040 is a wasteful number, since it uses less digits than its factorization.

1660883040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366 (or 355 counting only the distinct ones).

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

The square root of 1660883040 is about 40753.9328163553. The cubic root of 1660883040 is about 1184.2580625097.

The spelling of 1660883040 in words is "one billion, six hundred sixty million, eight hundred eighty-three thousand, forty".