689937552 has 60 divisors (see below), whose sum is σ = 1939042560. Its totient is φ = 229005504.

The previous prime is 689937541. The next prime is 689937553. The reversal of 689937552 is 255739986.

689937552 is a `hidden beast` number, since 6 + 89 + 9 + 3 + 7 + 552 = 666.

It is not an unprimeable number, because it can be changed into a prime (689937553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24393 + ... + 44439.

It is an arithmetic number, because the mean of its divisors is an integer number (32317376).

Almost surely, 2^689937552 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 689937552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969521280).

689937552 is an abundant number, since it is smaller than the sum of its proper divisors (1249105008).

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

689937552 is a wasteful number, since it uses less digits than its factorization.

689937552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20300 (or 20291 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 689937552 is about 26266.6623688660. The cubic root of 689937552 is about 883.6289332117.

The spelling of 689937552 in words is "six hundred eighty-nine million, nine hundred thirty-seven thousand, five hundred fifty-two".