6546624646 has 4 divisors (see below), whose sum is σ = 9819936972. Its totient is φ = 3273312322.

The previous prime is 6546624613. The next prime is 6546624647. The reversal of 6546624646 is 6464266456.

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

It is a super-2 number, since 2×6546624646² = 85716588511229250632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6546624646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6546624647) 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 as a sum of consecutive naturals, namely, 1636656160 + ... + 1636656163.

It is an arithmetic number, because the mean of its divisors is an integer number (2454984243).

Almost surely, 2^6546624646 is an apocalyptic number.

6546624646 is a deficient number, since it is larger than the sum of its proper divisors (3273312326).

6546624646 is a wasteful number, since it uses less digits than its factorization.

6546624646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273312325.

The product of its digits is 4976640, while the sum is 49.

The square root of 6546624646 is about 80911.2145873488. The cubic root of 6546624646 is about 1870.7071825565.

The spelling of 6546624646 in words is "six billion, five hundred forty-six million, six hundred twenty-four thousand, six hundred forty-six".