688411 has 2 divisors, whose sum is σ = 688412. Its totient is φ = 688410.

The previous prime is 688403. The next prime is 688423. The reversal of 688411 is 114886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688411 - 2³ = 688403 is a prime.

688411 is a lucky number.

It is equal to p₅₅₆₉₃ and since 688411 and 55693 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 688411.

It is not a weakly prime, because it can be changed into another prime (688451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344205 + 344206.

It is an arithmetic number, because the mean of its divisors is an integer number (344206).

2⁶⁸⁸⁴¹¹ is an apocalyptic number.

688411 is a deficient number, since it is larger than the sum of its proper divisors (1).

688411 is an equidigital number, since it uses as much as digits as its factorization.

688411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 28.

The square root of 688411 is about 829.7053693933. The cubic root of 688411 is about 88.2976747809.

The spelling of 688411 in words is "six hundred eighty-eight thousand, four hundred eleven".