689256894 has 8 divisors (see below), whose sum is σ = 1378513800. Its totient is φ = 229752296.

The previous prime is 689256889. The next prime is 689256899. The reversal of 689256894 is 498652986.

It is an interprime number because it is at equal distance from previous prime (689256889) and next prime (689256899).

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

689256894 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689256899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57438069 + ... + 57438080.

It is an arithmetic number, because the mean of its divisors is an integer number (172314225).

Almost surely, 2^689256894 is an apocalyptic number.

689256894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

689256894 is a wasteful number, since it uses less digits than its factorization.

689256894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114876154.

The product of its digits is 7464960, while the sum is 57.

The square root of 689256894 is about 26253.7024817453. The cubic root of 689256894 is about 883.3382561808.

The spelling of 689256894 in words is "six hundred eighty-nine million, two hundred fifty-six thousand, eight hundred ninety-four".