689741530 has 8 divisors (see below), whose sum is σ = 1241534772. Its totient is φ = 275896608.

The previous prime is 689741519. The next prime is 689741567. The reversal of 689741530 is 35147986.

It can be written as a sum of positive squares in 2 ways, for example, as 637512001 + 52229529 = 25249^2 + 7227^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34487067 + ... + 34487086.

Almost surely, 2^689741530 is an apocalyptic number.

689741530 is a deficient number, since it is larger than the sum of its proper divisors (551793242).

689741530 is a wasteful number, since it uses less digits than its factorization.

689741530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68974160.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 689741530 is about 26262.9307199330. The cubic root of 689741530 is about 883.5452410395.

The spelling of 689741530 in words is "six hundred eighty-nine million, seven hundred forty-one thousand, five hundred thirty".