689876079 has 8 divisors (see below), whose sum is σ = 925152432. Its totient is φ = 457258560.

The previous prime is 689876071. The next prime is 689876081. The reversal of 689876079 is 970678986.

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

It is not a de Polignac number, because 689876079 - 2³ = 689876071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689876071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664102 + ... + 665139.

It is an arithmetic number, because the mean of its divisors is an integer number (115644054).

Almost surely, 2^689876079 is an apocalyptic number.

689876079 is a deficient number, since it is larger than the sum of its proper divisors (235276353).

689876079 is a wasteful number, since it uses less digits than its factorization.

689876079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329417.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The square root of 689876079 is about 26265.4921712882. The cubic root of 689876079 is about 883.6026888390.

The spelling of 689876079 in words is "six hundred eighty-nine million, eight hundred seventy-six thousand, seventy-nine".