6220681621 has 8 divisors (see below), whose sum is σ = 7755655104. Its totient is φ = 4847284320.

The previous prime is 6220681583. The next prime is 6220681631. The reversal of 6220681621 is 1261860226.

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 6220681621 - 2⁹ = 6220681109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6220681631) 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, 40393960 + ... + 40394113.

It is an arithmetic number, because the mean of its divisors is an integer number (969456888).

Almost surely, 2^6220681621 is an apocalyptic number.

It is an amenable number.

6220681621 is a deficient number, since it is larger than the sum of its proper divisors (1534973483).

6220681621 is a wasteful number, since it uses less digits than its factorization.

6220681621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80788091.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 6220681621 is about 78871.2978275367. The cubic root of 6220681621 is about 1839.1309716540.

The spelling of 6220681621 in words is "six billion, two hundred twenty million, six hundred eighty-one thousand, six hundred twenty-one".