689423079 has 16 divisors (see below), whose sum is σ = 924592640. Its totient is φ = 456943680.

The previous prime is 689423069. The next prime is 689423081. The reversal of 689423079 is 970324986.

It is not a de Polignac number, because 689423079 - 2⁵ = 689423047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689423029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 449544 + ... + 451074.

It is an arithmetic number, because the mean of its divisors is an integer number (57787040).

Almost surely, 2^689423079 is an apocalyptic number.

689423079 is a deficient number, since it is larger than the sum of its proper divisors (235169561).

689423079 is a wasteful number, since it uses less digits than its factorization.

689423079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 689423079 is about 26256.8672731535. The cubic root of 689423079 is about 883.4092436326.

The spelling of 689423079 in words is "six hundred eighty-nine million, four hundred twenty-three thousand, seventy-nine".