689557272 has 64 divisors (see below), whose sum is σ = 1817683200. Its totient is φ = 217388160.

The previous prime is 689557261. The next prime is 689557313. The reversal of 689557272 is 272755986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428293 + ... + 429899.

It is an arithmetic number, because the mean of its divisors is an integer number (28401300).

Almost surely, 2^689557272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689557272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (908841600).

689557272 is an abundant number, since it is smaller than the sum of its proper divisors (1128125928).

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

689557272 is a wasteful number, since it uses less digits than its factorization.

689557272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576 (or 2572 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 689557272 is about 26259.4225374436. The cubic root of 689557272 is about 883.4665570828.

The spelling of 689557272 in words is "six hundred eighty-nine million, five hundred fifty-seven thousand, two hundred seventy-two".