6696731855 has 16 divisors (see below), whose sum is σ = 8768932128. Its totient is φ = 4869072000.

The previous prime is 6696731831. The next prime is 6696731927. The reversal of 6696731855 is 5581376966.

It is a happy number.

It is not a de Polignac number, because 6696731855 - 2⁸ = 6696731599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6696731855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229385 + ... + 256925.

It is an arithmetic number, because the mean of its divisors is an integer number (548058258).

Almost surely, 2^6696731855 is an apocalyptic number.

6696731855 is a deficient number, since it is larger than the sum of its proper divisors (2072200273).

6696731855 is a wasteful number, since it uses less digits than its factorization.

6696731855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31978.

The product of its digits is 8164800, while the sum is 56.

The square root of 6696731855 is about 81833.5619107466. The cubic root of 6696731855 is about 1884.8970578441.

The spelling of 6696731855 in words is "six billion, six hundred ninety-six million, seven hundred thirty-one thousand, eight hundred fifty-five".