689470828 has 12 divisors (see below), whose sum is σ = 1210455792. Its totient is φ = 343626320.

The previous prime is 689470823. The next prime is 689470843. The reversal of 689470828 is 828074986.

689470828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (689470823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275875 + ... + 278362.

It is an arithmetic number, because the mean of its divisors is an integer number (100871316).

Almost surely, 2^689470828 is an apocalyptic number.

It is an amenable number.

689470828 is a deficient number, since it is larger than the sum of its proper divisors (520984964).

689470828 is a wasteful number, since it uses less digits than its factorization.

689470828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554552 (or 554550 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 689470828 is about 26257.7765242985. The cubic root of 689470828 is about 883.4296379475.

The spelling of 689470828 in words is "six hundred eighty-nine million, four hundred seventy thousand, eight hundred twenty-eight".