613452240 has 120 divisors (see below), whose sum is σ = 2168655840. Its totient is φ = 154973952.

The previous prime is 613452227. The next prime is 613452247. The reversal of 613452240 is 42254316.

613452240 is a `hidden beast` number, since 6 + 134 + 522 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×613452240² = 752647301522035200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613452247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8742 + ... + 36101.

It is an arithmetic number, because the mean of its divisors is an integer number (18072132).

Almost surely, 2^613452240 is an apocalyptic number.

613452240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 613452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1084327920).

613452240 is an abundant number, since it is smaller than the sum of its proper divisors (1555203600).

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

613452240 is a wasteful number, since it uses less digits than its factorization.

613452240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44881 (or 44872 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 613452240 is about 24767.9680232352. The cubic root of 613452240 is about 849.6895013545.

The spelling of 613452240 in words is "six hundred thirteen million, four hundred fifty-two thousand, two hundred forty".