1165387 has 6 divisors (see below), whose sum is σ = 1218812. Its totient is φ = 1114212.

The previous prime is 1165379. The next prime is 1165397. The reversal of 1165387 is 7835611.

1165387 = 214² + 215² + ... + 236².

It is not a de Polignac number, because 1165387 - 2³ = 1165379 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1165357) 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, 573 + ... + 1630.

2^1165387 is an apocalyptic number.

1165387 is a deficient number, since it is larger than the sum of its proper divisors (53425).

1165387 is an equidigital number, since it uses as much as digits as its factorization.

1165387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249 (or 2226 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 1165387 is about 1079.5309166485. The cubic root of 1165387 is about 105.2341561901.

The spelling of 1165387 in words is "one million, one hundred sixty-five thousand, three hundred eighty-seven".