6820402608 has 40 divisors (see below), whose sum is σ = 19577082800. Its totient is φ = 2273467392.

The previous prime is 6820402607. The next prime is 6820402627. The reversal of 6820402608 is 8062040286.

6820402608 is a `hidden beast` number, since 6 + 8 + 2 + 0 + 40 + 2 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6820402607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7893553 + ... + 7894416.

It is an arithmetic number, because the mean of its divisors is an integer number (489427070).

Almost surely, 2^6820402608 is an apocalyptic number.

It is an amenable number.

6820402608 is an abundant number, since it is smaller than the sum of its proper divisors (12756680192).

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

6820402608 is a wasteful number, since it uses less digits than its factorization.

6820402608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15787986 (or 15787974 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 6820402608 is about 82585.7288397941. The cubic root of 6820402608 is about 1896.4293611812.

The spelling of 6820402608 in words is "six billion, eight hundred twenty million, four hundred two thousand, six hundred eight".