6467646 has 16 divisors (see below), whose sum is σ = 13497984. Its totient is φ = 2062104.

The previous prime is 6467621. The next prime is 6467653.

6467646 is nontrivially palindromic in base 10.

It is a super-4 number, since 4×6467646⁴ (a number of 28 digits) contains 4444 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23296 + ... + 23571.

It is an arithmetic number, because the mean of its divisors is an integer number (843624).

Almost surely, 2^6467646 is an apocalyptic number.

6467646 is an abundant number, since it is smaller than the sum of its proper divisors (7030338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6467646 is a wasteful number, since it uses less digits than its factorization.

6467646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46895.

The product of its digits is 145152, while the sum is 39.

The square root of 6467646 is about 2543.1566998516. The cubic root of 6467646 is about 186.3153973610.

The spelling of 6467646 in words is "six million, four hundred sixty-seven thousand, six hundred forty-six".