689620676 has 12 divisors (see below), whose sum is σ = 1212107820. Its totient is φ = 343304160.

The previous prime is 689620669. The next prime is 689620703. The reversal of 689620676 is 676026986.

It can be written as a sum of positive squares in 2 ways, for example, as 400960576 + 288660100 = 20024^2 + 16990^2 .

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 3 ways as a sum of consecutive naturals, for example, 375515 + ... + 377346.

It is an arithmetic number, because the mean of its divisors is an integer number (101008985).

Almost surely, 2^689620676 is an apocalyptic number.

It is an amenable number.

689620676 is a deficient number, since it is larger than the sum of its proper divisors (522487144).

689620676 is a wasteful number, since it uses less digits than its factorization.

689620676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753094 (or 753092 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 689620676 is about 26260.6297715801. The cubic root of 689620676 is about 883.4936341650.

It can be divided in two parts, 6896 and 20676, that added together give a palindrome (27572).

The spelling of 689620676 in words is "six hundred eighty-nine million, six hundred twenty thousand, six hundred seventy-six".