689051 has 8 divisors (see below), whose sum is σ = 772464. Its totient is φ = 609120.

The previous prime is 689041. The next prime is 689063. The reversal of 689051 is 150986.

689051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689051 - 2¹⁰ = 688027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689021) 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, 440 + ... + 1253.

It is an arithmetic number, because the mean of its divisors is an integer number (96558).

2⁶⁸⁹⁰⁵¹ is an apocalyptic number.

689051 is a deficient number, since it is larger than the sum of its proper divisors (83413).

689051 is a wasteful number, since it uses less digits than its factorization.

689051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 689051 is about 830.0909588714. The cubic root of 689051 is about 88.3250290837.

It can be divided in two parts, 68 and 9051, that added together give a palindrome (9119).

The spelling of 689051 in words is "six hundred eighty-nine thousand, fifty-one".