1187697 has 16 divisors (see below), whose sum is σ = 1889280. Its totient is φ = 648912.

The previous prime is 1187689. The next prime is 1187699. The reversal of 1187697 is 7967811.

It is not a de Polignac number, because 1187697 - 2³ = 1187689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1187699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747 + ... + 1712.

It is an arithmetic number, because the mean of its divisors is an integer number (118080).

2^1187697 is an apocalyptic number.

It is an amenable number.

1187697 is a deficient number, since it is larger than the sum of its proper divisors (701583).

1187697 is a wasteful number, since it uses less digits than its factorization.

1187697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492.

The product of its digits is 21168, while the sum is 39.

The square root of 1187697 is about 1089.8151219358. The cubic root of 1187697 is about 105.9014451229.

The spelling of 1187697 in words is "one million, one hundred eighty-seven thousand, six hundred ninety-seven".