689688682 has 16 divisors (see below), whose sum is σ = 1088059392. Its totient is φ = 327422160.

The previous prime is 689688617. The next prime is 689688683. The reversal of 689688682 is 286886986.

It is a super-3 number, since 3×689688682³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689688682.

It is not an unprimeable number, because it can be changed into a prime (689688683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101658 + ... + 108229.

It is an arithmetic number, because the mean of its divisors is an integer number (68003712).

Almost surely, 2^689688682 is an apocalyptic number.

689688682 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

689688682 is a deficient number, since it is larger than the sum of its proper divisors (398370710).

689688682 is a wasteful number, since it uses less digits than its factorization.

689688682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209973.

The product of its digits is 15925248, while the sum is 61.

The square root of 689688682 is about 26261.9245677083. The cubic root of 689688682 is about 883.5226747160.

The spelling of 689688682 in words is "six hundred eighty-nine million, six hundred eighty-eight thousand, six hundred eighty-two".