613105385 has 8 divisors (see below), whose sum is σ = 761096520. Its totient is φ = 473570944.

The previous prime is 613105379. The next prime is 613105397. The reversal of 613105385 is 583501316.

It can be written as a sum of positive squares in 4 ways, for example, as 145853929 + 467251456 = 12077^2 + 21616^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 613105385 - 2⁴ = 613105369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2114012 + ... + 2114301.

It is an arithmetic number, because the mean of its divisors is an integer number (95137065).

Almost surely, 2^613105385 is an apocalyptic number.

It is an amenable number.

613105385 is a deficient number, since it is larger than the sum of its proper divisors (147991135).

613105385 is a wasteful number, since it uses less digits than its factorization.

613105385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228347.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 613105385 is about 24760.9649448482. The cubic root of 613105385 is about 849.5293288117.

The spelling of 613105385 in words is "six hundred thirteen million, one hundred five thousand, three hundred eighty-five".