2106620447 has 8 divisors (see below), whose sum is σ = 2120445600. Its totient is φ = 2092819680.

The previous prime is 2106620441. The next prime is 2106620449. The reversal of 2106620447 is 7440266012.

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 2106620447 - 2²² = 2102426143 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 (2106620441) 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, 186929 + ... + 197877.

It is an arithmetic number, because the mean of its divisors is an integer number (265055700).

Almost surely, 2^2106620447 is an apocalyptic number.

2106620447 is a deficient number, since it is larger than the sum of its proper divisors (13825153).

2106620447 is a wasteful number, since it uses less digits than its factorization.

2106620447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 2106620447 is about 45897.9351060590. The cubic root of 2106620447 is about 1281.9234686106.

Adding to 2106620447 its reverse (7440266012), we get a palindrome (9546886459).

The spelling of 2106620447 in words is "two billion, one hundred six million, six hundred twenty thousand, four hundred forty-seven".