613884309 has 8 divisors (see below), whose sum is σ = 823933632. Its totient is φ = 406545600.

The previous prime is 613884307. The next prime is 613884347. The reversal of 613884309 is 903488316.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 613884309 - 2¹ = 613884307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613884301) 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 7 ways as a sum of consecutive naturals, for example, 677124 + ... + 678029.

It is an arithmetic number, because the mean of its divisors is an integer number (102991704).

Almost surely, 2^613884309 is an apocalyptic number.

It is an amenable number.

613884309 is a deficient number, since it is larger than the sum of its proper divisors (210049323).

613884309 is a wasteful number, since it uses less digits than its factorization.

613884309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355307.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 613884309 is about 24776.6888223588. The cubic root of 613884309 is about 849.8889400456. Note that the first 3 decimals are identical.

The spelling of 613884309 in words is "six hundred thirteen million, eight hundred eighty-four thousand, three hundred nine".