689749084 has 12 divisors (see below), whose sum is σ = 1207464664. Its totient is φ = 344759184.

The previous prime is 689749061. The next prime is 689749103. The reversal of 689749084 is 480947986.

689749084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14607 + ... + 39910.

Almost surely, 2^689749084 is an apocalyptic number.

It is an amenable number.

689749084 is a deficient number, since it is larger than the sum of its proper divisors (517715580).

689749084 is a wasteful number, since it uses less digits than its factorization.

689749084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57684 (or 57682 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 689749084 is about 26263.0745344105. The cubic root of 689749084 is about 883.5484665359.

The spelling of 689749084 in words is "six hundred eighty-nine million, seven hundred forty-nine thousand, eighty-four".