613624240 has 20 divisors (see below), whose sum is σ = 1426676544. Its totient is φ = 245449664.

The previous prime is 613624237. The next prime is 613624267. The reversal of 613624240 is 42426316.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 613624199 and 613624208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835072 + ... + 3835231.

Almost surely, 2^613624240 is an apocalyptic number.

It is an amenable number.

613624240 is an abundant number, since it is smaller than the sum of its proper divisors (813052304).

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

613624240 is a wasteful number, since it uses less digits than its factorization.

613624240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670316 (or 7670310 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 613624240 is about 24771.4400065882. The cubic root of 613624240 is about 849.7689060351.

The spelling of 613624240 in words is "six hundred thirteen million, six hundred twenty-four thousand, two hundred forty".