689469053 has 12 divisors (see below), whose sum is σ = 863731260. Its totient is φ = 545513472.

The previous prime is 689469043. The next prime is 689469059. The reversal of 689469053 is 350964986.

It can be written as a sum of positive squares in 2 ways, for example, as 288388324 + 401080729 = 16982^2 + 20027^2 .

It is not a de Polignac number, because 689469053 - 2¹² = 689464957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 689468992 and 689469010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689469059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 540548 + ... + 541821.

It is an arithmetic number, because the mean of its divisors is an integer number (71977605).

Almost surely, 2^689469053 is an apocalyptic number.

It is an amenable number.

689469053 is a deficient number, since it is larger than the sum of its proper divisors (174262207).

689469053 is a wasteful number, since it uses less digits than its factorization.

689469053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082396 (or 1082389 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 689469053 is about 26257.7427247660. The cubic root of 689469053 is about 883.4288798352.

The spelling of 689469053 in words is "six hundred eighty-nine million, four hundred sixty-nine thousand, fifty-three".