1099327661 has 8 divisors (see below), whose sum is σ = 1164533760. Its totient is φ = 1034181568.

The previous prime is 1099327657. The next prime is 1099327681. The reversal of 1099327661 is 1667239901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1099327661 - 2² = 1099327657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099327601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25940 + ... + 53586.

It is an arithmetic number, because the mean of its divisors is an integer number (145566720).

Almost surely, 2^1099327661 is an apocalyptic number.

It is an amenable number.

1099327661 is a deficient number, since it is larger than the sum of its proper divisors (65206099).

1099327661 is a wasteful number, since it uses less digits than its factorization.

1099327661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30003.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 1099327661 is about 33156.1104624774. The cubic root of 1099327661 is about 1032.0697567800.

The spelling of 1099327661 in words is "one billion, ninety-nine million, three hundred twenty-seven thousand, six hundred sixty-one".