679438754 has 8 divisors (see below), whose sum is σ = 1019677008. Its totient is φ = 339546420.

The previous prime is 679438751. The next prime is 679438763. The reversal of 679438754 is 457834976.

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

It is a junction number, because it is equal to n+sod(n) for n = 679438696 and 679438705.

It is not an unprimeable number, because it can be changed into a prime (679438751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81512 + ... + 89459.

It is an arithmetic number, because the mean of its divisors is an integer number (127459626).

Almost surely, 2^679438754 is an apocalyptic number.

679438754 is a deficient number, since it is larger than the sum of its proper divisors (340238254).

679438754 is a wasteful number, since it uses less digits than its factorization.

679438754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172960.

The product of its digits is 5080320, while the sum is 53.

The square root of 679438754 is about 26066.0459985783. The cubic root of 679438754 is about 879.1239361676.

The spelling of 679438754 in words is "six hundred seventy-nine million, four hundred thirty-eight thousand, seven hundred fifty-four".