6466779 has 24 divisors (see below), whose sum is σ = 10325952. Its totient is φ = 3867120.

The previous prime is 6466771. The next prime is 6466781. The reversal of 6466779 is 9776646.

It is not a de Polignac number, because 6466779 - 2³ = 6466771 is a prime.

It is a d-powerful number, because it can be written as 6 + 4⁶ + 6² + 6⁸ + 7 + 7² + 9⁷ .

It is not an unprimeable number, because it can be changed into a prime (6466771) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7824 + ... + 8610.

It is an arithmetic number, because the mean of its divisors is an integer number (430248).

Almost surely, 2^6466779 is an apocalyptic number.

6466779 is a deficient number, since it is larger than the sum of its proper divisors (3859173).

6466779 is a wasteful number, since it uses less digits than its factorization.

6466779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 6466779 is about 2542.9862366910. The cubic root of 6466779 is about 186.3070716802.

It can be divided in two parts, 64667 and 79, that added together give a palindrome (64746).

The spelling of 6466779 in words is "six million, four hundred sixty-six thousand, seven hundred seventy-nine".