1668676770 has 96 divisors (see below), whose sum is σ = 4403393280. Its totient is φ = 438382080.

The previous prime is 1668676747. The next prime is 1668676811. The reversal of 1668676770 is 776768661.

It is a happy 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, 2320471 + ... + 2321189.

It is an arithmetic number, because the mean of its divisors is an integer number (45868680).

Almost surely, 2^1668676770 is an apocalyptic number.

1668676770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668676770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201696640).

1668676770 is an abundant number, since it is smaller than the sum of its proper divisors (2734716510).

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

1668676770 is a wasteful number, since it uses less digits than its factorization.

1668676770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1077 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The square root of 1668676770 is about 40849.4402654431. The cubic root of 1668676770 is about 1186.1075582084.

The spelling of 1668676770 in words is "one billion, six hundred sixty-eight million, six hundred seventy-six thousand, seven hundred seventy".