6620534446 has 16 divisors (see below), whose sum is σ = 10033054560. Its totient is φ = 3276208800.

The previous prime is 6620534443. The next prime is 6620534447. The reversal of 6620534446 is 6444350266.

It is a junction number, because it is equal to n+sod(n) for n = 6620534399 and 6620534408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620534443) 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, 705775 + ... + 715093.

It is an arithmetic number, because the mean of its divisors is an integer number (627065910).

Almost surely, 2^6620534446 is an apocalyptic number.

6620534446 is a deficient number, since it is larger than the sum of its proper divisors (3412520114).

6620534446 is a wasteful number, since it uses less digits than its factorization.

6620534446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939.

The product of its (nonzero) digits is 414720, while the sum is 40.

The square root of 6620534446 is about 81366.6666762256. Note that the first 4 decimals coincide. The cubic root of 6620534446 is about 1877.7207974356.

The spelling of 6620534446 in words is "six billion, six hundred twenty million, five hundred thirty-four thousand, four hundred forty-six".