688872299 has 2 divisors, whose sum is σ = 688872300. Its totient is φ = 688872298.

The previous prime is 688872281. The next prime is 688872307. The reversal of 688872299 is 992278886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-688872299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (688872229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344436149 + 344436150.

It is an arithmetic number, because the mean of its divisors is an integer number (344436150).

Almost surely, 2^688872299 is an apocalyptic number.

688872299 is a deficient number, since it is larger than the sum of its proper divisors (1).

688872299 is an equidigital number, since it uses as much as digits as its factorization.

688872299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 59.

The square root of 688872299 is about 26246.3768737706. The cubic root of 688872299 is about 883.1739291174.

The spelling of 688872299 in words is "six hundred eighty-eight million, eight hundred seventy-two thousand, two hundred ninety-nine".