146591 has 4 divisors (see below), whose sum is σ = 155232. Its totient is φ = 137952.

The previous prime is 146581. The next prime is 146603. The reversal of 146591 is 195641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 195641 = 31 ⋅6311.

It is a cyclic number.

It is not a de Polignac number, because 146591 - 2⁶ = 146527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146521) 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 3 ways as a sum of consecutive naturals, for example, 4295 + ... + 4328.

It is an arithmetic number, because the mean of its divisors is an integer number (38808).

2¹⁴⁶⁵⁹¹ is an apocalyptic number.

146591 is a deficient number, since it is larger than the sum of its proper divisors (8641).

146591 is an equidigital number, since it uses as much as digits as its factorization.

146591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640.

The product of its digits is 1080, while the sum is 26.

The square root of 146591 is about 382.8720412879. The cubic root of 146591 is about 52.7273286671.

It can be divided in two parts, 146 and 591, that added together give a palindrome (737).

The spelling of 146591 in words is "one hundred forty-six thousand, five hundred ninety-one".