689622948 has 72 divisors (see below), whose sum is σ = 1995913920. Its totient is φ = 196672320.

The previous prime is 689622937. The next prime is 689622959. The reversal of 689622948 is 849226986.

It is a happy number.

689622948 is a `hidden beast` number, since 6 + 8 + 9 + 622 + 9 + 4 + 8 = 666.

689622948 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (689622937) and next prime (689622959).

It is a junction number, because it is equal to n+sod(n) for n = 689622894 and 689622903.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153778 + ... + 158198.

Almost surely, 2^689622948 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 689622948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997956960).

689622948 is an abundant number, since it is smaller than the sum of its proper divisors (1306290972).

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

689622948 is a wasteful number, since it uses less digits than its factorization.

689622948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057 (or 5052 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 689622948 is about 26260.6730302176. The cubic root of 689622948 is about 883.4946044063.

The spelling of 689622948 in words is "six hundred eighty-nine million, six hundred twenty-two thousand, nine hundred forty-eight".