688437053 has 2 divisors, whose sum is σ = 688437054. Its totient is φ = 688437052.

The previous prime is 688437023. The next prime is 688437073. The reversal of 688437053 is 350734886.

688437053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 592338244 + 96098809 = 24338^2 + 9803^2 .

It is a cyclic number.

It is not a de Polignac number, because 688437053 - 2⁸ = 688436797 is a prime.

It is a Chen prime.

It is equal to p_35684873 and since 688437053 and 35684873 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 688436995 and 688437013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688437023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344218526 + 344218527.

It is an arithmetic number, because the mean of its divisors is an integer number (344218527).

Almost surely, 2^688437053 is an apocalyptic number.

It is an amenable number.

688437053 is a deficient number, since it is larger than the sum of its proper divisors (1).

688437053 is an equidigital number, since it uses as much as digits as its factorization.

688437053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 688437053 is about 26238.0840192267. The cubic root of 688437053 is about 882.9878864570.

The spelling of 688437053 in words is "six hundred eighty-eight million, four hundred thirty-seven thousand, fifty-three".