1368408064 has 75 divisors (see below), whose sum is σ = 2907776347. Its totient is φ = 643956736.

The previous prime is 1368408031. The next prime is 1368408071. The reversal of 1368408064 is 4608048631.

The square root of 1368408064 is 36992.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 424689664 + 943718400 = 20608^2 + 30720^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=4, B=136.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 80494584 + ... + 80494600.

Almost surely, 2^1368408064 is an apocalyptic number.

1368408064 is the 36992-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1368408064

1368408064 is an abundant number, since it is smaller than the sum of its proper divisors (1539368283).

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

1368408064 is an frugal number, since it uses more digits than its factorization.

1368408064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 19 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The cubic root of 1368408064 is about 1110.2101877215.

The spelling of 1368408064 in words is "one billion, three hundred sixty-eight million, four hundred eight thousand, sixty-four".