689541258 has 32 divisors (see below), whose sum is σ = 1595091456. Its totient is φ = 194637168.

The previous prime is 689541257. The next prime is 689541271. The reversal of 689541258 is 852145986.

It is not an unprimeable number, because it can be changed into a prime (689541257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95416 + ... + 102387.

It is an arithmetic number, because the mean of its divisors is an integer number (49846608).

Almost surely, 2^689541258 is an apocalyptic number.

689541258 is an abundant number, since it is smaller than the sum of its proper divisors (905550198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689541258 is a wasteful number, since it uses less digits than its factorization.

689541258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197898.

The product of its digits is 691200, while the sum is 48.

The square root of 689541258 is about 26259.1176165537. The cubic root of 689541258 is about 883.4597179395.

The spelling of 689541258 in words is "six hundred eighty-nine million, five hundred forty-one thousand, two hundred fifty-eight".