687162611 has 2 divisors, whose sum is σ = 687162612. Its totient is φ = 687162610.

The previous prime is 687162589. The next prime is 687162613. The reversal of 687162611 is 116261786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 687162611 - 2⁶ = 687162547 is a prime.

Together with 687162613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (687162613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343581305 + 343581306.

It is an arithmetic number, because the mean of its divisors is an integer number (343581306).

Almost surely, 2^687162611 is an apocalyptic number.

687162611 is a deficient number, since it is larger than the sum of its proper divisors (1).

687162611 is an equidigital number, since it uses as much as digits as its factorization.

687162611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 687162611 is about 26213.7866589320. The cubic root of 687162611 is about 882.4426843659.

The spelling of 687162611 in words is "six hundred eighty-seven million, one hundred sixty-two thousand, six hundred eleven".