613075385 has 24 divisors (see below), whose sum is σ = 818207640. Its totient is φ = 440474112.

The previous prime is 613075367. The next prime is 613075427. The reversal of 613075385 is 583570316.

It can be written as a sum of positive squares in 12 ways, for example, as 39137536 + 573937849 = 6256^2 + 23957^2 .

It is not a de Polignac number, because 613075385 - 2¹⁴ = 613059001 is a prime.

It is a super-2 number, since 2×613075385² = 751722855385796450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21461 + ... + 41069.

It is an arithmetic number, because the mean of its divisors is an integer number (34091985).

Almost surely, 2^613075385 is an apocalyptic number.

613075385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613075385 is a deficient number, since it is larger than the sum of its proper divisors (205132255).

613075385 is a wasteful number, since it uses less digits than its factorization.

613075385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19677 (or 19664 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 613075385 is about 24760.3591452144. The cubic root of 613075385 is about 849.5154724143.

The spelling of 613075385 in words is "six hundred thirteen million, seventy-five thousand, three hundred eighty-five".