6620442641 has 8 divisors (see below), whose sum is σ = 6758160768. Its totient is φ = 6483960000.

The previous prime is 6620442629. The next prime is 6620442679. The reversal of 6620442641 is 1462440266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6620442641 - 2²² = 6616248337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620442341) 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, 298040 + ... + 319481.

It is an arithmetic number, because the mean of its divisors is an integer number (844770096).

Almost surely, 2^6620442641 is an apocalyptic number.

It is an amenable number.

6620442641 is a deficient number, since it is larger than the sum of its proper divisors (137718127).

6620442641 is a wasteful number, since it uses less digits than its factorization.

6620442641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617743.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 6620442641 is about 81366.1025304764. The cubic root of 6620442641 is about 1877.7121181285.

The spelling of 6620442641 in words is "six billion, six hundred twenty million, four hundred forty-two thousand, six hundred forty-one".