1660234660 has 72 divisors (see below), whose sum is σ = 4065586560. Its totient is φ = 567838656.

The previous prime is 1660234619. The next prime is 1660234661. The reversal of 1660234660 is 664320661.

It is not an unprimeable number, because it can be changed into a prime (1660234661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 451911 + ... + 455569.

It is an arithmetic number, because the mean of its divisors is an integer number (56466480).

Almost surely, 2^1660234660 is an apocalyptic number.

1660234660 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 1660234660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032793280).

1660234660 is an abundant number, since it is smaller than the sum of its proper divisors (2405351900).

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

1660234660 is a wasteful number, since it uses less digits than its factorization.

1660234660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4136 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1660234660 is about 40745.9772247519. The cubic root of 1660234660 is about 1184.1039378335.

The spelling of 1660234660 in words is "one billion, six hundred sixty million, two hundred thirty-four thousand, six hundred sixty".