611256713 has 4 divisors (see below), whose sum is σ = 611308308. Its totient is φ = 611205120.

The previous prime is 611256703. The next prime is 611256719. The reversal of 611256713 is 317652116.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 485188729 + 126067984 = 22027^2 + 11228^2 .

It is a cyclic number.

It is not a de Polignac number, because 611256713 - 2²⁸ = 342821257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 611256713.

It is not an unprimeable number, because it can be changed into a prime (611256719) 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 3 ways as a sum of consecutive naturals, for example, 1853 + ... + 35013.

It is an arithmetic number, because the mean of its divisors is an integer number (152827077).

Almost surely, 2^611256713 is an apocalyptic number.

It is an amenable number.

611256713 is a deficient number, since it is larger than the sum of its proper divisors (51595).

611256713 is a wasteful number, since it uses less digits than its factorization.

611256713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51594.

The product of its digits is 7560, while the sum is 32.

The square root of 611256713 is about 24723.6063914632. The cubic root of 611256713 is about 848.6746186422.

The spelling of 611256713 in words is "six hundred eleven million, two hundred fifty-six thousand, seven hundred thirteen".