689099472 has 60 divisors (see below), whose sum is σ = 1937035620. Its totient is φ = 228685824.

The previous prime is 689099447. The next prime is 689099473. The reversal of 689099472 is 274990986.

689099472 is a `hidden beast` number, since 6 + 89 + 0 + 99 + 472 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 543076416 + 146023056 = 23304^2 + 12084^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689099473) 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, 22528 + ... + 43424.

It is an arithmetic number, because the mean of its divisors is an integer number (32283927).

Almost surely, 2^689099472 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 689099472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968517810).

689099472 is an abundant number, since it is smaller than the sum of its proper divisors (1247936148).

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

689099472 is a wasteful number, since it uses less digits than its factorization.

689099472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21140 (or 21131 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 689099472 is about 26250.7042191252. The cubic root of 689099472 is about 883.2710014005.

The spelling of 689099472 in words is "six hundred eighty-nine million, ninety-nine thousand, four hundred seventy-two".