1097685056 has 28 divisors (see below), whose sum is σ = 2345775852. Its totient is φ = 506623488.

The previous prime is 1097685049. The next prime is 1097685079. The reversal of 1097685056 is 6505867901.

It can be written as a sum of positive squares in 2 ways, for example, as 73685056 + 1024000000 = 8584^2 + 32000^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1097685056.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658835 + ... + 660498.

It is an arithmetic number, because the mean of its divisors is an integer number (83777709).

Almost surely, 2^1097685056 is an apocalyptic number.

1097685056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1097685056 is an abundant number, since it is smaller than the sum of its proper divisors (1248090796).

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

1097685056 is a wasteful number, since it uses less digits than its factorization.

1097685056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319358 (or 1319348 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 1097685056 is about 33131.3304290667. The cubic root of 1097685056 is about 1031.5554642528. Note that the first 3 decimals are identical.

The spelling of 1097685056 in words is "one billion, ninety-seven million, six hundred eighty-five thousand, fifty-six".