679528405 has 8 divisors (see below), whose sum is σ = 827605152. Its totient is φ = 535508688.

The previous prime is 679528391. The next prime is 679528411. The reversal of 679528405 is 504825976.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-679528405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1013887 + ... + 1014556.

It is an arithmetic number, because the mean of its divisors is an integer number (103450644).

Almost surely, 2^679528405 is an apocalyptic number.

It is an amenable number.

679528405 is a deficient number, since it is larger than the sum of its proper divisors (148076747).

679528405 is a wasteful number, since it uses less digits than its factorization.

679528405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028515.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 679528405 is about 26067.7656311392. The cubic root of 679528405 is about 879.1626008612.

The spelling of 679528405 in words is "six hundred seventy-nine million, five hundred twenty-eight thousand, four hundred five".