688854269387 has 2 divisors, whose sum is σ = 688854269388. Its totient is φ = 688854269386.

The previous prime is 688854269333. The next prime is 688854269417. The reversal of 688854269387 is 783962458886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688854269387 - 2³⁴ = 671674400203 is a prime.

It is not a weakly prime, because it can be changed into another prime (688854265387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344427134693 + 344427134694.

It is an arithmetic number, because the mean of its divisors is an integer number (344427134694).

Almost surely, 2^688854269387 is an apocalyptic number.

688854269387 is a deficient number, since it is larger than the sum of its proper divisors (1).

688854269387 is an equidigital number, since it uses as much as digits as its factorization.

688854269387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1114767360, while the sum is 74.

The spelling of 688854269387 in words is "six hundred eighty-eight billion, eight hundred fifty-four million, two hundred sixty-nine thousand, three hundred eighty-seven".