6909890460 has 192 divisors, whose sum is σ = 22156001280. Its totient is φ = 1592715520.

The previous prime is 6909890459. The next prime is 6909890503. The reversal of 6909890460 is 640989096.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2715949 + ... + 2718491.

It is an arithmetic number, because the mean of its divisors is an integer number (115395840).

Almost surely, 2^6909890460 is an apocalyptic number.

6909890460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6909890460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11078000640).

6909890460 is an abundant number, since it is smaller than the sum of its proper divisors (15246110820).

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

6909890460 is a wasteful number, since it uses less digits than its factorization.

6909890460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 6909890460 is about 83125.7508838266. The cubic root of 6909890460 is about 1904.6874529437.

The spelling of 6909890460 in words is "six billion, nine hundred nine million, eight hundred ninety thousand, four hundred sixty".