1166465 has 4 divisors (see below), whose sum is σ = 1399764. Its totient is φ = 933168.

The previous prime is 1166453. The next prime is 1166479. The reversal of 1166465 is 5646611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5646611 = 197 ⋅28663.

It can be written as a sum of positive squares in 2 ways, for example, as 929296 + 237169 = 964^2 + 487^2 .

It is a cyclic number.

It is not a de Polignac number, because 1166465 - 2⁶ = 1166401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116642 + ... + 116651.

It is an arithmetic number, because the mean of its divisors is an integer number (349941).

2^1166465 is an apocalyptic number.

It is an amenable number.

1166465 is a deficient number, since it is larger than the sum of its proper divisors (233299).

1166465 is an equidigital number, since it uses as much as digits as its factorization.

1166465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233298.

The product of its digits is 4320, while the sum is 29.

The square root of 1166465 is about 1080.0300921734. The cubic root of 1166465 is about 105.2665939010.

The spelling of 1166465 in words is "one million, one hundred sixty-six thousand, four hundred sixty-five".