1204663680 has 192 divisors, whose sum is σ = 4538261520. Its totient is φ = 292024320.

The previous prime is 1204663679. The next prime is 1204663687. The reversal of 1204663680 is 863664021.

1204663680 is a `hidden beast` number, since 12 + 0 + 4 + 6 + 636 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1204663680² = 2902429163822284800, which contains 22 as substring.

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 (1204663687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53854 + ... + 72866.

Almost surely, 2^1204663680 is an apocalyptic number.

1204663680 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 1204663680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2269130760).

1204663680 is an abundant number, since it is smaller than the sum of its proper divisors (3333597840).

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

1204663680 is a wasteful number, since it uses less digits than its factorization.

1204663680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19049 (or 19034 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1204663680 is about 34708.2652980526. The cubic root of 1204663680 is about 1064.0334283880.

The spelling of 1204663680 in words is "one billion, two hundred four million, six hundred sixty-three thousand, six hundred eighty".