1161669 has 8 divisors (see below), whose sum is σ = 1561600. Its totient is φ = 768096.

The previous prime is 1161659. The next prime is 1161683. The reversal of 1161669 is 9661611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1161669 - 2⁵ = 1161637 is a prime.

It is a super-2 number, since 2×1161669² = 2698949731122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161619) 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 7 ways as a sum of consecutive naturals, for example, 1144 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (195200).

2^1161669 is an apocalyptic number.

It is an amenable number.

1161669 is a deficient number, since it is larger than the sum of its proper divisors (399931).

1161669 is a wasteful number, since it uses less digits than its factorization.

1161669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its digits is 1944, while the sum is 30.

The square root of 1161669 is about 1077.8074967266. The cubic root of 1161669 is about 105.1221254745.

It can be divided in two parts, 1161 and 669, that added together give a triangular number (1830 = T₆₀).

The spelling of 1161669 in words is "one million, one hundred sixty-one thousand, six hundred sixty-nine".