6478779 has 8 divisors (see below), whose sum is σ = 8849232. Its totient is φ = 4213760.

The previous prime is 6478777. The next prime is 6478781. The reversal of 6478779 is 9778746.

It is an interprime number because it is at equal distance from previous prime (6478777) and next prime (6478781).

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

It is a cyclic number.

It is not a de Polignac number, because 6478779 - 2¹ = 6478777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6478777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26214 + ... + 26459.

It is an arithmetic number, because the mean of its divisors is an integer number (1106154).

Almost surely, 2^6478779 is an apocalyptic number.

6478779 is a deficient number, since it is larger than the sum of its proper divisors (2370453).

6478779 is a wasteful number, since it uses less digits than its factorization.

6478779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52717.

The product of its digits is 592704, while the sum is 48.

The square root of 6478779 is about 2545.3445739231. The cubic root of 6478779 is about 186.4222399584.

The spelling of 6478779 in words is "six million, four hundred seventy-eight thousand, seven hundred seventy-nine".