6620281457 has 8 divisors (see below), whose sum is σ = 7114333536. Its totient is φ = 6137854272.

The previous prime is 6620281453. The next prime is 6620281469. The reversal of 6620281457 is 7541820266.

6620281457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6620281457 - 2² = 6620281453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6620281453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905043 + ... + 2907320.

It is an arithmetic number, because the mean of its divisors is an integer number (889291692).

Almost surely, 2^6620281457 is an apocalyptic number.

6620281457 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

6620281457 is a deficient number, since it is larger than the sum of its proper divisors (494052079).

6620281457 is a wasteful number, since it uses less digits than its factorization.

6620281457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5812447.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 6620281457 is about 81365.1120382686. The cubic root of 6620281457 is about 1877.6968794895.

The spelling of 6620281457 in words is "six billion, six hundred twenty million, two hundred eighty-one thousand, four hundred fifty-seven".