6659340479 has 4 divisors (see below), whose sum is σ = 7264735080. Its totient is φ = 6053945880.

The previous prime is 6659340461. The next prime is 6659340511. The reversal of 6659340479 is 9740439566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6659340479 - 2⁸ = 6659340223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6659340479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659340409) 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, 302697284 + ... + 302697305.

It is an arithmetic number, because the mean of its divisors is an integer number (1816183770).

Almost surely, 2^6659340479 is an apocalyptic number.

6659340479 is a deficient number, since it is larger than the sum of its proper divisors (605394601).

6659340479 is a wasteful number, since it uses less digits than its factorization.

6659340479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605394600.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 6659340479 is about 81604.7822066820. The cubic root of 6659340479 is about 1881.3823844116.

The spelling of 6659340479 in words is "six billion, six hundred fifty-nine million, three hundred forty thousand, four hundred seventy-nine".