688619754811 has 2 divisors, whose sum is σ = 688619754812. Its totient is φ = 688619754810.

The previous prime is 688619754773. The next prime is 688619754827. The reversal of 688619754811 is 118457916886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688619754811 - 2⁹ = 688619754299 is a prime.

It is not a weakly prime, because it can be changed into another prime (688619754841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344309877405 + 344309877406.

It is an arithmetic number, because the mean of its divisors is an integer number (344309877406).

Almost surely, 2^688619754811 is an apocalyptic number.

688619754811 is a deficient number, since it is larger than the sum of its proper divisors (1).

688619754811 is an equidigital number, since it uses as much as digits as its factorization.

688619754811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 64.

The spelling of 688619754811 in words is "six hundred eighty-eight billion, six hundred nineteen million, seven hundred fifty-four thousand, eight hundred eleven".