689511253 has 2 divisors, whose sum is σ = 689511254. Its totient is φ = 689511252.

The previous prime is 689511247. The next prime is 689511259. The reversal of 689511253 is 352115986.

It is a balanced prime because it is at equal distance from previous prime (689511247) and next prime (689511259).

It can be written as a sum of positive squares in only one way, i.e., 688170289 + 1340964 = 26233^2 + 1158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-689511253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689511259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344755626 + 344755627.

It is an arithmetic number, because the mean of its divisors is an integer number (344755627).

Almost surely, 2^689511253 is an apocalyptic number.

It is an amenable number.

689511253 is a deficient number, since it is larger than the sum of its proper divisors (1).

689511253 is an equidigital number, since it uses as much as digits as its factorization.

689511253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 40.

The square root of 689511253 is about 26258.5462849717. The cubic root of 689511253 is about 883.4469033361.

The spelling of 689511253 in words is "six hundred eighty-nine million, five hundred eleven thousand, two hundred fifty-three".