1171005 has 32 divisors (see below), whose sum is σ = 2101248. Its totient is φ = 552000.

The previous prime is 1170979. The next prime is 1171031. The reversal of 1171005 is 5001711.

It is an interprime number because it is at equal distance from previous prime (1170979) and next prime (1171031).

It is not a de Polignac number, because 1171005 - 2⁶ = 1170941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7680 + ... + 7830.

It is an arithmetic number, because the mean of its divisors is an integer number (65664).

2^1171005 is an apocalyptic number.

1171005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1171005 is a deficient number, since it is larger than the sum of its proper divisors (930243).

1171005 is a wasteful number, since it uses less digits than its factorization.

1171005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its (nonzero) digits is 35, while the sum is 15.

The square root of 1171005 is about 1082.1298443348. The cubic root of 1171005 is about 105.4029865198.

Adding to 1171005 its reverse (5001711), we get a palindrome (6172716).

The spelling of 1171005 in words is "one million, one hundred seventy-one thousand, five".