613240 has 16 divisors (see below), whose sum is σ = 1379880. Its totient is φ = 245280.

The previous prime is 613231. The next prime is 613243. The reversal of 613240 is 42316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613243) 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, 7626 + ... + 7705.

2⁶¹³²⁴⁰ is an apocalyptic number.

It is an amenable number.

613240 is an abundant number, since it is smaller than the sum of its proper divisors (766640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613240 is a wasteful number, since it uses less digits than its factorization.

613240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15342 (or 15338 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 613240 is about 783.0964180738. The cubic root of 613240 is about 84.9591499212.

Adding to 613240 its reverse (42316), we get a palindrome (655556).

The spelling of 613240 in words is "six hundred thirteen thousand, two hundred forty".