1121697 has 6 divisors (see below), whose sum is σ = 1620242. Its totient is φ = 747792.

The previous prime is 1121693. The next prime is 1121699. The reversal of 1121697 is 7961211.

It can be written as a sum of positive squares in only one way, i.e., 1115136 + 6561 = 1056^2 + 81^2 .

It is not a de Polignac number, because 1121697 - 2² = 1121693 is a prime.

It is a Duffinian number.

1121697 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121697.

It is not an unprimeable number, because it can be changed into a prime (1121693) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62308 + ... + 62325.

2^1121697 is an apocalyptic number.

It is an amenable number.

1121697 is a deficient number, since it is larger than the sum of its proper divisors (498545).

1121697 is a wasteful number, since it uses less digits than its factorization.

1121697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124639 (or 124636 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 1121697 is about 1059.1019780928. The cubic root of 1121697 is about 103.9023059407.

The spelling of 1121697 in words is "one million, one hundred twenty-one thousand, six hundred ninety-seven".