1668075360 has 768 divisors, whose sum is σ = 7054387200. Its totient is φ = 322043904.

The previous prime is 1668075359. The next prime is 1668075361. The reversal of 1668075360 is 635708661.

It is an interprime number because it is at equal distance from previous prime (1668075359) and next prime (1668075361).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668075361) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 31473094 + ... + 31473146.

It is an arithmetic number, because the mean of its divisors is an integer number (9185400).

Almost surely, 2^1668075360 is an apocalyptic number.

1668075360 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 1668075360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527193600).

1668075360 is an abundant number, since it is smaller than the sum of its proper divisors (5386311840).

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

1668075360 is a wasteful number, since it uses less digits than its factorization.

1668075360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1668075360 is about 40842.0783016731. The cubic root of 1668075360 is about 1185.9650455551.

The spelling of 1668075360 in words is "one billion, six hundred sixty-eight million, seventy-five thousand, three hundred sixty".