613780420 has 48 divisors (see below), whose sum is σ = 1444137408. Its totient is φ = 217157760.

The previous prime is 613780397. The next prime is 613780429. The reversal of 613780420 is 24087316.

It is not an unprimeable number, because it can be changed into a prime (613780429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29562 + ... + 45841.

It is an arithmetic number, because the mean of its divisors is an integer number (30086196).

Almost surely, 2^613780420 is an apocalyptic number.

It is an amenable number.

613780420 is an abundant number, since it is smaller than the sum of its proper divisors (830356988).

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

613780420 is a wasteful number, since it uses less digits than its factorization.

613780420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75460 (or 75458 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 613780420 is about 24774.5922267149. The cubic root of 613780420 is about 849.8409944789.

The spelling of 613780420 in words is "six hundred thirteen million, seven hundred eighty thousand, four hundred twenty".