6623645461 has 4 divisors (see below), whose sum is σ = 6972258400. Its totient is φ = 6275032524.

The previous prime is 6623645453. The next prime is 6623645467. The reversal of 6623645461 is 1645463266.

6623645461 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6623645461 - 2³ = 6623645453 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 (6623645467) 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 3 ways as a sum of consecutive naturals, for example, 174306441 + ... + 174306478.

It is an arithmetic number, because the mean of its divisors is an integer number (1743064600).

Almost surely, 2^6623645461 is an apocalyptic number.

It is an amenable number.

6623645461 is a deficient number, since it is larger than the sum of its proper divisors (348612939).

6623645461 is a wasteful number, since it uses less digits than its factorization.

6623645461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348612938.

The product of its digits is 622080, while the sum is 43.

The square root of 6623645461 is about 81385.7816882040. The cubic root of 6623645461 is about 1878.0148674916.

The spelling of 6623645461 in words is "six billion, six hundred twenty-three million, six hundred forty-five thousand, four hundred sixty-one".