1098665600 has 48 divisors (see below), whose sum is σ = 2714055270. Its totient is φ = 439464960.

The previous prime is 1098665563. The next prime is 1098665629. The reversal of 1098665600 is 65668901.

It can be written as a sum of positive squares in 3 ways, for example, as 991998016 + 106667584 = 31496^2 + 10328^2 .

It is a super-2 number, since 2×1098665600² = 2414132201246720000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168467 + ... + 174866.

Almost surely, 2^1098665600 is an apocalyptic number.

1098665600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098665600 is an abundant number, since it is smaller than the sum of its proper divisors (1615389670).

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

1098665600 is an equidigital number, since it uses as much as digits as its factorization.

1098665600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343357 (or 343340 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1098665600 is about 33146.1249620525. The cubic root of 1098665600 is about 1031.8625300132.

The spelling of 1098665600 in words is "one billion, ninety-eight million, six hundred sixty-five thousand, six hundred".