6690350855 has 16 divisors (see below), whose sum is σ = 8185904064. Its totient is φ = 5247440640.

The previous prime is 6690350831. The next prime is 6690350869. The reversal of 6690350855 is 5580530966.

It is a happy number.

It is not a de Polignac number, because 6690350855 - 2¹⁶ = 6690285319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 383942 + ... + 400988.

It is an arithmetic number, because the mean of its divisors is an integer number (511619004).

Almost surely, 2^6690350855 is an apocalyptic number.

6690350855 is a deficient number, since it is larger than the sum of its proper divisors (1495553209).

6690350855 is a wasteful number, since it uses less digits than its factorization.

6690350855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18586.

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 6690350855 is about 81794.5649478008. The cubic root of 6690350855 is about 1884.2981910852.

The spelling of 6690350855 in words is "six billion, six hundred ninety million, three hundred fifty thousand, eight hundred fifty-five".