689520275 has 6 divisors (see below), whose sum is σ = 855005172. Its totient is φ = 551616200.

The previous prime is 689520253. The next prime is 689520283. The reversal of 689520275 is 572025986.

689520275 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-689520275 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13790381 + ... + 13790430.

It is an arithmetic number, because the mean of its divisors is an integer number (142500862).

Almost surely, 2^689520275 is an apocalyptic number.

689520275 is a deficient number, since it is larger than the sum of its proper divisors (165484897).

689520275 is a wasteful number, since it uses less digits than its factorization.

689520275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580821 (or 27580816 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 689520275 is about 26258.7180760981. The cubic root of 689520275 is about 883.4507565114.

The spelling of 689520275 in words is "six hundred eighty-nine million, five hundred twenty thousand, two hundred seventy-five".