6646225454 has 8 divisors (see below), whose sum is σ = 10875641688. Its totient is φ = 3021011560.

The previous prime is 6646225447. The next prime is 6646225471. The reversal of 6646225454 is 4545226466.

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

It is a super-2 number, since 2×6646225454² = 88344625570795012232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151050557 + ... + 151050600.

It is an arithmetic number, because the mean of its divisors is an integer number (1359455211).

Almost surely, 2^6646225454 is an apocalyptic number.

6646225454 is a deficient number, since it is larger than the sum of its proper divisors (4229416234).

6646225454 is a wasteful number, since it uses less digits than its factorization.

6646225454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302101170.

The product of its digits is 1382400, while the sum is 44.

The square root of 6646225454 is about 81524.3856401261. The cubic root of 6646225454 is about 1880.1464966195.

It can be divided in two parts, 664622 and 5454, that added together give a palindrome (670076).

The spelling of 6646225454 in words is "six billion, six hundred forty-six million, two hundred twenty-five thousand, four hundred fifty-four".