611257013 has 4 divisors (see below), whose sum is σ = 620380320. Its totient is φ = 602133708.

The previous prime is 611256979. The next prime is 611257021. The reversal of 611257013 is 310752116.

611257013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611257013 - 2⁸ = 611256757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611257033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4561553 + ... + 4561686.

It is an arithmetic number, because the mean of its divisors is an integer number (155095080).

Almost surely, 2^611257013 is an apocalyptic number.

It is an amenable number.

611257013 is a deficient number, since it is larger than the sum of its proper divisors (9123307).

611257013 is an equidigital number, since it uses as much as digits as its factorization.

611257013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9123306.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 611257013 is about 24723.6124585385. The cubic root of 611257013 is about 848.6747574832.

The spelling of 611257013 in words is "six hundred eleven million, two hundred fifty-seven thousand, thirteen".