6690194560 has 128 divisors (see below), whose sum is σ = 18704188800. Its totient is φ = 2240372736.

The previous prime is 6690194531. The next prime is 6690194587. The reversal of 6690194560 is 654910966.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×6690194560³ (a number of 30 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6690194560.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175276 + ... + 210004.

It is an arithmetic number, because the mean of its divisors is an integer number (146126475).

Almost surely, 2^6690194560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6690194560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9352094400).

6690194560 is an abundant number, since it is smaller than the sum of its proper divisors (12013994240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6690194560 is a wasteful number, since it uses less digits than its factorization.

6690194560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34798 (or 34786 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 6690194560 is about 81793.6095303294. The cubic root of 6690194560 is about 1884.2835177800.

The spelling of 6690194560 in words is "six billion, six hundred ninety million, one hundred ninety-four thousand, five hundred sixty".