689021676 has 72 divisors (see below), whose sum is σ = 1993065984. Its totient is φ = 196610400.

The previous prime is 689021633. The next prime is 689021689. The reversal of 689021676 is 676120986.

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 23 ways as a sum of consecutive naturals, for example, 291901 + ... + 294251.

It is an arithmetic number, because the mean of its divisors is an integer number (27681472).

Almost surely, 2^689021676 is an apocalyptic number.

It is an amenable number.

689021676 is an abundant number, since it is smaller than the sum of its proper divisors (1304044308).

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

689021676 is a wasteful number, since it uses less digits than its factorization.

689021676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531 (or 3526 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 689021676 is about 26249.2223884823. Note that the first 3 decimals coincide. The cubic root of 689021676 is about 883.2377611405.

The spelling of 689021676 in words is "six hundred eighty-nine million, twenty-one thousand, six hundred seventy-six".