1213648704 has 112 divisors (see below), whose sum is σ = 3584651200. Its totient is φ = 402651648.

The previous prime is 1213648699. The next prime is 1213648721. The reversal of 1213648704 is 4078463121.

1213648704 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 648 + 7 + 0 + 4 = 666.

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

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 394179 + ... + 397245.

Almost surely, 2^1213648704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213648704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1792325600).

1213648704 is an abundant number, since it is smaller than the sum of its proper divisors (2371002496).

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

1213648704 is a wasteful number, since it uses less digits than its factorization.

1213648704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317 (or 3301 counting only the distinct ones).

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

The square root of 1213648704 is about 34837.4612163401. The cubic root of 1213648704 is about 1066.6722548318.

The spelling of 1213648704 in words is "one billion, two hundred thirteen million, six hundred forty-eight thousand, seven hundred four".