611317687 has 2 divisors, whose sum is σ = 611317688. Its totient is φ = 611317686.

The previous prime is 611317633. The next prime is 611317711. The reversal of 611317687 is 786713116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611317687 - 2⁷ = 611317559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611317607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305658843 + 305658844.

It is an arithmetic number, because the mean of its divisors is an integer number (305658844).

Almost surely, 2^611317687 is an apocalyptic number.

611317687 is a deficient number, since it is larger than the sum of its proper divisors (1).

611317687 is an equidigital number, since it uses as much as digits as its factorization.

611317687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 611317687 is about 24724.8394736953. The cubic root of 611317687 is about 848.7028366640.

The spelling of 611317687 in words is "six hundred eleven million, three hundred seventeen thousand, six hundred eighty-seven".