1680674400 has 576 divisors, whose sum is σ = 6749568000. Its totient is φ = 401448960.

The previous prime is 1680674389. The next prime is 1680674407. The reversal of 1680674400 is 44760861.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680674407) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8445501 + ... + 8445699.

It is an arithmetic number, because the mean of its divisors is an integer number (11718000).

Almost surely, 2^1680674400 is an apocalyptic number.

1680674400 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 1680674400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3374784000).

1680674400 is an abundant number, since it is smaller than the sum of its proper divisors (5068893600).

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

1680674400 is a wasteful number, since it uses less digits than its factorization.

1680674400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1680674400 is about 40996.0290759971. The cubic root of 1680674400 is about 1188.9434399454.

The spelling of 1680674400 in words is "one billion, six hundred eighty million, six hundred seventy-four thousand, four hundred".