6657622263 has 12 divisors (see below), whose sum is σ = 10182246048. Its totient is φ = 4177331520.

The previous prime is 6657622259. The next prime is 6657622277. The reversal of 6657622263 is 3622267566.

It is a happy number.

It is not a de Polignac number, because 6657622263 - 2² = 6657622259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6657622253) 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 11 ways as a sum of consecutive naturals, for example, 21756783 + ... + 21757088.

It is an arithmetic number, because the mean of its divisors is an integer number (848520504).

Almost surely, 2^6657622263 is an apocalyptic number.

6657622263 is a deficient number, since it is larger than the sum of its proper divisors (3524623785).

6657622263 is a wasteful number, since it uses less digits than its factorization.

6657622263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43513894 (or 43513891 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The square root of 6657622263 is about 81594.2538601831. The cubic root of 6657622263 is about 1881.2205616111.

The spelling of 6657622263 in words is "six billion, six hundred fifty-seven million, six hundred twenty-two thousand, two hundred sixty-three".