688153423 has 2 divisors, whose sum is σ = 688153424. Its totient is φ = 688153422.

The previous prime is 688153339. The next prime is 688153447. The reversal of 688153423 is 324351886.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-688153423 is a prime.

It is equal to p_35670892 and since 688153423 and 35670892 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688153483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344076711 + 344076712.

It is an arithmetic number, because the mean of its divisors is an integer number (344076712).

Almost surely, 2^688153423 is an apocalyptic number.

688153423 is a deficient number, since it is larger than the sum of its proper divisors (1).

688153423 is an equidigital number, since it uses as much as digits as its factorization.

688153423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 40.

The square root of 688153423 is about 26232.6785327004. The cubic root of 688153423 is about 882.8666087239.

The spelling of 688153423 in words is "six hundred eighty-eight million, one hundred fifty-three thousand, four hundred twenty-three".