689819130 has 576 divisors, whose sum is σ = 2630983680. Its totient is φ = 121305600.

The previous prime is 689819087. The next prime is 689819131. The reversal of 689819130 is 31918986.

689819130 = 4950² + 4951² + ... + 4977².

It is a super-2 number, since 2×689819130² = 951700864227913800, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (689819131) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 22252215 + ... + 22252245.

It is an arithmetic number, because the mean of its divisors is an integer number (4567680).

Almost surely, 2^689819130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689819130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315491840).

689819130 is an abundant number, since it is smaller than the sum of its proper divisors (1941164550).

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

689819130 is a wasteful number, since it uses less digits than its factorization.

689819130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 689819130 is about 26264.4080458707. The cubic root of 689819130 is about 883.5783744847.

The spelling of 689819130 in words is "six hundred eighty-nine million, eight hundred nineteen thousand, one hundred thirty".