146491 has 4 divisors (see below), whose sum is σ = 147312. Its totient is φ = 145672.

The previous prime is 146477. The next prime is 146513. The reversal of 146491 is 194641.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 194641 = 59 ⋅3299.

It is a cyclic number.

It is not a de Polignac number, because 146491 - 2¹⁵ = 113723 is a prime.

It is a super-2 number, since 2×146491² = 42919226162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146191) 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, 16 + ... + 541.

It is an arithmetic number, because the mean of its divisors is an integer number (36828).

2¹⁴⁶⁴⁹¹ is an apocalyptic number.

146491 is a deficient number, since it is larger than the sum of its proper divisors (821).

146491 is an equidigital number, since it uses as much as digits as its factorization.

146491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its digits is 864, while the sum is 25.

The square root of 146491 is about 382.7414270758. The cubic root of 146491 is about 52.7153362704.

The spelling of 146491 in words is "one hundred forty-six thousand, four hundred ninety-one".