689462816 has 48 divisors (see below), whose sum is σ = 1601349120. Its totient is φ = 285949440.

The previous prime is 689462803. The next prime is 689462821. The reversal of 689462816 is 618264986.

689462816 = 4701² + 4702² + ... + 4731².

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42701 + ... + 56588.

It is an arithmetic number, because the mean of its divisors is an integer number (33361440).

Almost surely, 2^689462816 is an apocalyptic number.

It is an amenable number.

689462816 is an abundant number, since it is smaller than the sum of its proper divisors (911886304).

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

689462816 is a wasteful number, since it uses less digits than its factorization.

689462816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99337 (or 99329 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 689462816 is about 26257.6239595284. The cubic root of 689462816 is about 883.4262159678.

The spelling of 689462816 in words is "six hundred eighty-nine million, four hundred sixty-two thousand, eight hundred sixteen".