6402206620 has 12 divisors (see below), whose sum is σ = 13444633944. Its totient is φ = 2560882640.

The previous prime is 6402206609. The next prime is 6402206651. The reversal of 6402206620 is 266022046.

It is a super-3 number, since 3×6402206620³ (a number of 30 digits) contains 333 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, 160055146 + ... + 160055185.

It is an arithmetic number, because the mean of its divisors is an integer number (1120386162).

Almost surely, 2^6402206620 is an apocalyptic number.

It is an amenable number.

6402206620 is an abundant number, since it is smaller than the sum of its proper divisors (7042427324).

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

6402206620 is a wasteful number, since it uses less digits than its factorization.

6402206620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320110340 (or 320110338 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6402206620 is about 80013.7901864422. The cubic root of 6402206620 is about 1856.8488885672.

Adding to 6402206620 its reverse (266022046), we get a palindrome (6668228666).

The spelling of 6402206620 in words is "six billion, four hundred two million, two hundred six thousand, six hundred twenty".