1099697 has 4 divisors (see below), whose sum is σ = 1120500. Its totient is φ = 1078896.

The previous prime is 1099687. The next prime is 1099711. The reversal of 1099697 is 7969901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 758641 = 584^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099697 - 2⁶ = 1099633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10322 + ... + 10427.

It is an arithmetic number, because the mean of its divisors is an integer number (280125).

2^1099697 is an apocalyptic number.

It is an amenable number.

1099697 is a deficient number, since it is larger than the sum of its proper divisors (20803).

1099697 is an equidigital number, since it uses as much as digits as its factorization.

1099697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20802.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 1099697 is about 1048.6643886392. The cubic root of 1099697 is about 103.2185324669.

The spelling of 1099697 in words is "one million, ninety-nine thousand, six hundred ninety-seven".