6620330406 has 16 divisors (see below), whose sum is σ = 13241491200. Its totient is φ = 2206638408.

The previous prime is 6620330389. The next prime is 6620330441. The reversal of 6620330406 is 6040330266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127375 + ... + 171653.

It is an arithmetic number, because the mean of its divisors is an integer number (827593200).

Almost surely, 2^6620330406 is an apocalyptic number.

6620330406 is an abundant number, since it is smaller than the sum of its proper divisors (6621160794).

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

6620330406 is a wasteful number, since it uses less digits than its factorization.

6620330406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69203.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 6620330406 is about 81365.4128361677. The cubic root of 6620330406 is about 1877.7015072463.

The spelling of 6620330406 in words is "six billion, six hundred twenty million, three hundred thirty thousand, four hundred six".