6620422436 has 12 divisors (see below), whose sum is σ = 11590510428. Its totient is φ = 3308848032.

The previous prime is 6620422433. The next prime is 6620422447. The reversal of 6620422436 is 6342240266.

It can be written as a sum of positive squares in 2 ways, for example, as 2694648100 + 3925774336 = 51910^2 + 62656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6620422396 and 6620422405.

It is not an unprimeable number, because it can be changed into a prime (6620422433) 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, 329831 + ... + 349326.

It is an arithmetic number, because the mean of its divisors is an integer number (965875869).

Almost surely, 2^6620422436 is an apocalyptic number.

It is an amenable number.

6620422436 is a deficient number, since it is larger than the sum of its proper divisors (4970087992).

6620422436 is a wasteful number, since it uses less digits than its factorization.

6620422436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681598 (or 681596 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 6620422436 is about 81365.9783693406. The cubic root of 6620422436 is about 1877.7102079233.

The spelling of 6620422436 in words is "six billion, six hundred twenty million, four hundred twenty-two thousand, four hundred thirty-six".