611716657 has 4 divisors (see below), whose sum is σ = 611928576. Its totient is φ = 611504740.

The previous prime is 611716639. The next prime is 611716673. The reversal of 611716657 is 756617116.

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 611716657 - 2⁷ = 611716529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611716057) 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, 101569 + ... + 107422.

It is an arithmetic number, because the mean of its divisors is an integer number (152982144).

Almost surely, 2^611716657 is an apocalyptic number.

It is an amenable number.

611716657 is a deficient number, since it is larger than the sum of its proper divisors (211919).

611716657 is a wasteful number, since it uses less digits than its factorization.

611716657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211918.

The product of its digits is 52920, while the sum is 40.

The square root of 611716657 is about 24732.9063597467. The cubic root of 611716657 is about 848.8874288119.

The spelling of 611716657 in words is "six hundred eleven million, seven hundred sixteen thousand, six hundred fifty-seven".