689685048 has 48 divisors (see below), whose sum is σ = 2011584120. Its totient is φ = 212210496.

The previous prime is 689685037. The next prime is 689685137. The reversal of 689685048 is 840586986.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 689684985 and 689685003.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 367486 + ... + 369357.

Almost surely, 2^689685048 is an apocalyptic number.

It is an amenable number.

689685048 is an abundant number, since it is smaller than the sum of its proper divisors (1321899072).

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

689685048 is a wasteful number, since it uses less digits than its factorization.

689685048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736868 (or 736861 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 689685048 is about 26261.8553799993. The cubic root of 689685048 is about 883.5211229400.

The spelling of 689685048 in words is "six hundred eighty-nine million, six hundred eighty-five thousand, forty-eight".