1164643 has 4 divisors (see below), whose sum is σ = 1225960. Its totient is φ = 1103328.

The previous prime is 1164641. The next prime is 1164659. The reversal of 1164643 is 3464611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3464611 = 103 ⋅33637.

It is a cyclic number.

It is not a de Polignac number, because 1164643 - 2¹ = 1164641 is a prime.

It is a Duffinian number.

1164643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1164641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30630 + ... + 30667.

It is an arithmetic number, because the mean of its divisors is an integer number (306490).

2^1164643 is an apocalyptic number.

1164643 is a deficient number, since it is larger than the sum of its proper divisors (61317).

1164643 is an equidigital number, since it uses as much as digits as its factorization.

1164643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61316.

The product of its digits is 1728, while the sum is 25.

The square root of 1164643 is about 1079.1862675183. The cubic root of 1164643 is about 105.2117570845.

Subtracting 1164643 from its reverse (3464611), we obtain a cube (2299968 = 132³).

The spelling of 1164643 in words is "one million, one hundred sixty-four thousand, six hundred forty-three".