1668296700 has 432 divisors, whose sum is σ = 6514208064. Its totient is φ = 348364800.

The previous prime is 1668296681. The next prime is 1668296731. The reversal of 1668296700 is 76928661.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3962490 + ... + 3962910.

Almost surely, 2^1668296700 is an apocalyptic number.

1668296700 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 1668296700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3257104032).

1668296700 is an abundant number, since it is smaller than the sum of its proper divisors (4845911364).

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

1668296700 is a wasteful number, since it uses less digits than its factorization.

1668296700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1668296700 is about 40844.7879171872. The cubic root of 1668296700 is about 1186.0174991991.

The spelling of 1668296700 in words is "one billion, six hundred sixty-eight million, two hundred ninety-six thousand, seven hundred".