1666083340 has 24 divisors (see below), whose sum is σ = 3513424320. Its totient is φ = 663643008.

The previous prime is 1666083311. The next prime is 1666083383. The reversal of 1666083340 is 433806661.

It is a self number, because there is not a number n which added to its sum of digits gives 1666083340.

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, 169497 + ... + 179056.

It is an arithmetic number, because the mean of its divisors is an integer number (146392680).

Almost surely, 2^1666083340 is an apocalyptic number.

1666083340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1666083340 is an abundant number, since it is smaller than the sum of its proper divisors (1847340980).

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

1666083340 is a wasteful number, since it uses less digits than its factorization.

1666083340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348801 (or 348799 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 1666083340 is about 40817.6841577275. The cubic root of 1666083340 is about 1185.4927633085.

It can be divided in two parts, 16660 and 83340, that added together give a 5-th power (100000 = 10⁵).

The spelling of 1666083340 in words is "one billion, six hundred sixty-six million, eighty-three thousand, three hundred forty".