6413321566 has 8 divisors (see below), whose sum is σ = 9624805560. Its totient is φ = 3205053048.

The previous prime is 6413321561. The next prime is 6413321569. The reversal of 6413321566 is 6651233146.

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

It is a super-2 number, since 2×6413321566² = 82261387017841384712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6413321561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798876 + ... + 806863.

It is an arithmetic number, because the mean of its divisors is an integer number (1203100695).

Almost surely, 2^6413321566 is an apocalyptic number.

6413321566 is a deficient number, since it is larger than the sum of its proper divisors (3211483994).

6413321566 is a wasteful number, since it uses less digits than its factorization.

6413321566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607738.

The product of its digits is 77760, while the sum is 37.

The square root of 6413321566 is about 80083.2165063317. The cubic root of 6413321566 is about 1857.9228330219.

The spelling of 6413321566 in words is "six billion, four hundred thirteen million, three hundred twenty-one thousand, five hundred sixty-six".