6648722431 has 8 divisors (see below), whose sum is σ = 7175501424. Its totient is φ = 6124134720.

The previous prime is 6648722417. The next prime is 6648722441. The reversal of 6648722431 is 1342278466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6648722431 is a prime.

It is a super-2 number, since 2×6648722431² = 88411019928965099522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648722441) 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, 541510 + ... + 553651.

It is an arithmetic number, because the mean of its divisors is an integer number (896937678).

Almost surely, 2^6648722431 is an apocalyptic number.

6648722431 is a deficient number, since it is larger than the sum of its proper divisors (526778993).

6648722431 is a wasteful number, since it uses less digits than its factorization.

6648722431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095641.

The product of its digits is 387072, while the sum is 43.

The square root of 6648722431 is about 81539.6984971124. The cubic root of 6648722431 is about 1880.3819232179.

The spelling of 6648722431 in words is "six billion, six hundred forty-eight million, seven hundred twenty-two thousand, four hundred thirty-one".