1099698768 has 150 divisors (see below), whose sum is σ = 3702709626. Its totient is φ = 314181504.

The previous prime is 1099698683. The next prime is 1099698781. The reversal of 1099698768 is 8678969901.

It can be written as a sum of positive squares in only one way, i.e., 1056770064 + 42928704 = 32508^2 + 6552^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 54846 + ... + 72162.

Almost surely, 2^1099698768 is an apocalyptic number.

1099698768 is a gapful number since it is divisible by the number (18) 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 1099698768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1851354813).

1099698768 is an abundant number, since it is smaller than the sum of its proper divisors (2603010858).

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

1099698768 is a wasteful number, since it uses less digits than its factorization.

1099698768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17351 (or 17329 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 1099698768 is about 33161.7063493422. The cubic root of 1099698768 is about 1032.1858778222.

The spelling of 1099698768 in words is "one billion, ninety-nine million, six hundred ninety-eight thousand, seven hundred sixty-eight".