6506900080 has 80 divisors (see below), whose sum is σ = 15716369088. Its totient is φ = 2503424000.

The previous prime is 6506900021. The next prime is 6506900107. The reversal of 6506900080 is 800096056.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×6506900080² = 84679497302208012800, which contains 22 as substring.

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, 218910 + ... + 246850.

Almost surely, 2^6506900080 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 6506900080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7858184544).

6506900080 is an abundant number, since it is smaller than the sum of its proper divisors (9209469008).

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

6506900080 is a wasteful number, since it uses less digits than its factorization.

6506900080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28066 (or 28060 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 6506900080 is about 80665.3586119841. The cubic root of 6506900080 is about 1866.9157198874.

The spelling of 6506900080 in words is "six billion, five hundred six million, nine hundred thousand, eighty".