689386629 has 16 divisors (see below), whose sum is σ = 931392000. Its totient is φ = 453500016.

The previous prime is 689386619. The next prime is 689386639. The reversal of 689386629 is 926683986.

It is an interprime number because it is at equal distance from previous prime (689386619) and next prime (689386639).

It is not a de Polignac number, because 689386629 - 2⁵ = 689386597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689386619) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 347362 + ... + 349340.

It is an arithmetic number, because the mean of its divisors is an integer number (58212000).

Almost surely, 2^689386629 is an apocalyptic number.

It is an amenable number.

689386629 is a deficient number, since it is larger than the sum of its proper divisors (242005371).

689386629 is a wasteful number, since it uses less digits than its factorization.

689386629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464.

The product of its digits is 6718464, while the sum is 57.

The square root of 689386629 is about 26256.1731598495. The cubic root of 689386629 is about 883.3936746565.

The spelling of 689386629 in words is "six hundred eighty-nine million, three hundred eighty-six thousand, six hundred twenty-nine".