689285430 has 64 divisors (see below), whose sum is σ = 1844579520. Its totient is φ = 183161088.

The previous prime is 689285419. The next prime is 689285431. The reversal of 689285430 is 34582986.

689285430 is a `hidden beast` number, since 6 + 89 + 28 + 543 + 0 = 666.

It is a super-2 number, since 2×689285430² = 950228808020569800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689285431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74754 + ... + 83466.

It is an arithmetic number, because the mean of its divisors is an integer number (28821555).

Almost surely, 2^689285430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689285430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922289760).

689285430 is an abundant number, since it is smaller than the sum of its proper divisors (1155294090).

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

689285430 is a wasteful number, since it uses less digits than its factorization.

689285430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022 (or 9016 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 689285430 is about 26254.2459423233. The cubic root of 689285430 is about 883.3504464071.

The spelling of 689285430 in words is "six hundred eighty-nine million, two hundred eighty-five thousand, four hundred thirty".