6561632622 has 8 divisors (see below), whose sum is σ = 13123265256. Its totient is φ = 2187210872.

The previous prime is 6561632621. The next prime is 6561632641. The reversal of 6561632622 is 2262361656.

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

6561632622 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561632621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546802713 + ... + 546802724.

It is an arithmetic number, because the mean of its divisors is an integer number (1640408157).

Almost surely, 2^6561632622 is an apocalyptic number.

6561632622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6561632622 is a wasteful number, since it uses less digits than its factorization.

6561632622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093605442.

The product of its digits is 155520, while the sum is 39.

The square root of 6561632622 is about 81003.9049799453. The cubic root of 6561632622 is about 1872.1356083049.

The spelling of 6561632622 in words is "six billion, five hundred sixty-one million, six hundred thirty-two thousand, six hundred twenty-two".