688452253 has 2 divisors, whose sum is σ = 688452254. Its totient is φ = 688452252.

The previous prime is 688452217. The next prime is 688452293. The reversal of 688452253 is 352254886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 686597209 + 1855044 = 26203^2 + 1362^2 .

It is a cyclic number.

It is not a de Polignac number, because 688452253 - 2¹⁷ = 688321181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688452203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344226126 + 344226127.

It is an arithmetic number, because the mean of its divisors is an integer number (344226127).

Almost surely, 2^688452253 is an apocalyptic number.

It is an amenable number.

688452253 is a deficient number, since it is larger than the sum of its proper divisors (1).

688452253 is an equidigital number, since it uses as much as digits as its factorization.

688452253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 43.

The square root of 688452253 is about 26238.3736729242. The cubic root of 688452253 is about 882.9943849050.

The spelling of 688452253 in words is "six hundred eighty-eight million, four hundred fifty-two thousand, two hundred fifty-three".