613256511 has 12 divisors (see below), whose sum is σ = 951173592. Its totient is φ = 350432208.

The previous prime is 613256491. The next prime is 613256543. The reversal of 613256511 is 115652316.

It is not a de Polignac number, because 613256511 - 2⁶ = 613256447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613252511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2085760 + ... + 2086053.

It is an arithmetic number, because the mean of its divisors is an integer number (79264466).

Almost surely, 2^613256511 is an apocalyptic number.

613256511 is a deficient number, since it is larger than the sum of its proper divisors (337917081).

613256511 is a wasteful number, since it uses less digits than its factorization.

613256511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171830 (or 4171823 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 613256511 is about 24764.0164553329. The cubic root of 613256511 is about 849.5991240025.

The spelling of 613256511 in words is "six hundred thirteen million, two hundred fifty-six thousand, five hundred eleven".