689471854 has 8 divisors (see below), whose sum is σ = 1044447768. Its totient is φ = 341322600.

The previous prime is 689471807. The next prime is 689471857. The reversal of 689471854 is 458174986.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689471857) 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, 1706412 + ... + 1706815.

It is an arithmetic number, because the mean of its divisors is an integer number (130555971).

Almost surely, 2^689471854 is an apocalyptic number.

689471854 is a deficient number, since it is larger than the sum of its proper divisors (354975914).

689471854 is a wasteful number, since it uses less digits than its factorization.

689471854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413330.

The product of its digits is 1935360, while the sum is 52.

The square root of 689471854 is about 26257.7960613605. The cubic root of 689471854 is about 883.4300761572.

The spelling of 689471854 in words is "six hundred eighty-nine million, four hundred seventy-one thousand, eight hundred fifty-four".