689462948 has 24 divisors (see below), whose sum is σ = 1279682712. Its totient is φ = 323907584.

The previous prime is 689462947. The next prime is 689462951. The reversal of 689462948 is 849264986.

It can be written as a sum of positive squares in 4 ways, for example, as 201583204 + 487879744 = 14198^2 + 22088^2 .

It is a junction number, because it is equal to n+sod(n) for n = 689462893 and 689462902.

It is not an unprimeable number, because it can be changed into a prime (689462947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33740 + ... + 50172.

It is an arithmetic number, because the mean of its divisors is an integer number (53320113).

Almost surely, 2^689462948 is an apocalyptic number.

689462948 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

689462948 is a deficient number, since it is larger than the sum of its proper divisors (590219764).

689462948 is a wasteful number, since it uses less digits than its factorization.

689462948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17071 (or 17069 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The square root of 689462948 is about 26257.6264730840. The cubic root of 689462948 is about 883.4262723461.

The spelling of 689462948 in words is "six hundred eighty-nine million, four hundred sixty-two thousand, nine hundred forty-eight".