1660088680 has 32 divisors (see below), whose sum is σ = 3736364040. Its totient is φ = 663828480.

The previous prime is 1660088663. The next prime is 1660088713. The reversal of 1660088680 is 868800661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1643653764 + 16434916 = 40542^2 + 4054^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231712 + ... + 238768.

Almost surely, 2^1660088680 is an apocalyptic number.

1660088680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1660088680 is the 23524-th octagonal number.

It is an amenable number.

1660088680 is an abundant number, since it is smaller than the sum of its proper divisors (2076275360).

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

1660088680 is a wasteful number, since it uses less digits than its factorization.

1660088680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12949 (or 12945 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1660088680 is about 40744.1858428905. The cubic root of 1660088680 is about 1184.0692317839.

The spelling of 1660088680 in words is "one billion, six hundred sixty million, eighty-eight thousand, six hundred eighty".