1165487 has 4 divisors (see below), whose sum is σ = 1180320. Its totient is φ = 1150656.

The previous prime is 1165471. The next prime is 1165511. The reversal of 1165487 is 7845611.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1165487 - 2⁴ = 1165471 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 (1165447) 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 3 ways as a sum of consecutive naturals, for example, 7298 + ... + 7455.

It is an arithmetic number, because the mean of its divisors is an integer number (295080).

2^1165487 is an apocalyptic number.

1165487 is a deficient number, since it is larger than the sum of its proper divisors (14833).

1165487 is an equidigital number, since it uses as much as digits as its factorization.

1165487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14832.

The product of its digits is 6720, while the sum is 32.

The square root of 1165487 is about 1079.5772320682. The cubic root of 1165487 is about 105.2371660957.

The spelling of 1165487 in words is "one million, one hundred sixty-five thousand, four hundred eighty-seven".