6656756923 has 4 divisors (see below), whose sum is σ = 6747945448. Its totient is φ = 6565568400.

The previous prime is 6656756917. The next prime is 6656756957. The reversal of 6656756923 is 3296576566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6656756923 - 2¹³ = 6656748731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6656756903) 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, 45594153 + ... + 45594298.

It is an arithmetic number, because the mean of its divisors is an integer number (1686986362).

Almost surely, 2^6656756923 is an apocalyptic number.

6656756923 is a deficient number, since it is larger than the sum of its proper divisors (91188525).

6656756923 is an equidigital number, since it uses as much as digits as its factorization.

6656756923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91188524.

The product of its digits is 12247200, while the sum is 55.

The square root of 6656756923 is about 81588.9509860251. The cubic root of 6656756923 is about 1881.1390527345.

The spelling of 6656756923 in words is "six billion, six hundred fifty-six million, seven hundred fifty-six thousand, nine hundred twenty-three".