601409 has 6 divisors (see below), whose sum is σ = 639174. Its totient is φ = 565760.

The previous prime is 601397. The next prime is 601411. The reversal of 601409 is 904106.

It can be written as a sum of positive squares in 3 ways, for example, as 207025 + 394384 = 455^2 + 628^2 .

It is a de Polignac number, because none of the positive numbers 2^k-601409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (601439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 752 + ... + 1329.

It is an arithmetic number, because the mean of its divisors is an integer number (106529).

2⁶⁰¹⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

601409 is a deficient number, since it is larger than the sum of its proper divisors (37765).

601409 is a wasteful number, since it uses less digits than its factorization.

601409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 601409 is about 775.5056415011. The cubic root of 601409 is about 84.4092369517.

The spelling of 601409 in words is "six hundred one thousand, four hundred nine".