1368684720 has 480 divisors, whose sum is σ = 5264663040. Its totient is φ = 316293120.

The previous prime is 1368684683. The next prime is 1368684731. The reversal of 1368684720 is 274868631.

It is a super-2 number, since 2×1368684720² = 3746595725522956800, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15378436 + ... + 15378524.

It is an arithmetic number, because the mean of its divisors is an integer number (10968048).

Almost surely, 2^1368684720 is an apocalyptic number.

1368684720 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 1368684720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2632331520).

1368684720 is an abundant number, since it is smaller than the sum of its proper divisors (3895978320).

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

1368684720 is a wasteful number, since it uses less digits than its factorization.

1368684720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1368684720 is about 36995.7392141311. The cubic root of 1368684720 is about 1110.2850010810.

The spelling of 1368684720 in words is "one billion, three hundred sixty-eight million, six hundred eighty-four thousand, seven hundred twenty".