1216676648 has 32 divisors (see below), whose sum is σ = 2507677920. Its totient is φ = 548808000.

The previous prime is 1216676641. The next prime is 1216676677. The reversal of 1216676648 is 8466766121.

It is not an unprimeable number, because it can be changed into a prime (1216676641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41243 + ... + 64298.

It is an arithmetic number, because the mean of its divisors is an integer number (78364935).

Almost surely, 2^1216676648 is an apocalyptic number.

It is an amenable number.

1216676648 is an abundant number, since it is smaller than the sum of its proper divisors (1291001272).

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

1216676648 is a wasteful number, since it uses less digits than its factorization.

1216676648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105689 (or 105685 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 1216676648 is about 34880.8923051002. The cubic root of 1216676648 is about 1067.5586017955.

The spelling of 1216676648 in words is "one billion, two hundred sixteen million, six hundred seventy-six thousand, six hundred forty-eight".