1660237260 has 96 divisors (see below), whose sum is σ = 5079497472. Its totient is φ = 401829120.

The previous prime is 1660237247. The next prime is 1660237261. The reversal of 1660237260 is 627320661.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1660237261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497959 + ... + 501281.

It is an arithmetic number, because the mean of its divisors is an integer number (52911432).

Almost surely, 2^1660237260 is an apocalyptic number.

1660237260 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 1660237260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2539748736).

1660237260 is an abundant number, since it is smaller than the sum of its proper divisors (3419260212).

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

1660237260 is a wasteful number, since it uses less digits than its factorization.

1660237260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 1660237260 is about 40746.0091297295. The cubic root of 1660237260 is about 1184.1045559526.

The spelling of 1660237260 in words is "one billion, six hundred sixty million, two hundred thirty-seven thousand, two hundred sixty".